{"product_id":"gse-mid-clamp-black-roof-integrated-solar-pv-mid-clamp-with-epdm-seal","title":"GSE Mid Clamp - Black (H16 \/ H21 \/ H27 variants: ART100482, ART105904, ART100744, ART106723)","description":"\u003c!-- SEO Product Name: GSE Mid Clamp - Black (H16 \/ H21 \/ H27 variants: ART100482, ART105904, ART100744, ART106723) --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eGSE Mid Clamp – Black\u003c\/strong\u003e range is the central fixing clamp used within the GSE In-Roof System to secure two adjacent framed PV modules to their mounting frame. Also referred to as a \u003cstrong\u003edouble clamp\u003c\/strong\u003e in GSE's installation manuals, it sits between neighbouring modules in a row, clamping both panel frames down onto the half-frame at a single shared fixing point.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThis listing covers four GSE mid clamp variants used across the \u003cstrong\u003ePortrait and Landscape\u003c\/strong\u003e In-Roof ranges, sized to different PV module thicknesses per GSE's official clamp engineering datasheet. Always confirm your module's exact thickness and which frame system (Portrait or Landscape) you are working with before ordering, as the variants are not interchangeable.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 140px; background: #008377CF; color: #ffffff; text-align: center; padding: 16px 8px; border-radius: 8px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 21px; font-weight: bold; line-height: 1.2;\"\u003e4\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.92;\"\u003eVariants Available\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; background: #008377CF; color: #ffffff; text-align: center; padding: 16px 8px; border-radius: 8px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 21px; font-weight: bold; line-height: 1.2;\"\u003eH16 \/ H21 \/ H27\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.92;\"\u003eClamp Sizes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; background: #008377CF; color: #ffffff; text-align: center; padding: 16px 8px; border-radius: 8px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 21px; font-weight: bold; line-height: 1.2;\"\u003e30-46mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.92;\"\u003eModule Thickness Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; background: #008377CF; color: #ffffff; text-align: center; padding: 16px 8px; border-radius: 8px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 21px; font-weight: bold; line-height: 1.2;\"\u003eBlack\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.92;\"\u003eFinish\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; background: #008377CF; color: #ffffff; text-align: center; padding: 16px 8px; border-radius: 8px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 21px; font-weight: bold; line-height: 1.2;\"\u003eIncluded\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.92;\"\u003eEPDM Seal (all variants)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 140px; background: #008377CF; color: #ffffff; text-align: center; padding: 16px 8px; border-radius: 8px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 21px; font-weight: bold; line-height: 1.2;\"\u003eMid \/ Double\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px; opacity: 0.92;\"\u003eClamp Type\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; padding: 14px 18px; margin: 18px 0; border-radius: 4px; font-size: 15px; line-height: 1.55; color: #333333;\"\u003e\n\u003cdiv style=\"font-weight: bold; margin-bottom: 4px; color: #e0942a;\"\u003ePlease Note\u003c\/div\u003e\nThese four variants are \u003cstrong\u003enot interchangeable\u003c\/strong\u003e. Per GSE's general clamp engineering datasheet, clamp size relates to module thickness on GSE's standard In-Roof frames: \u003cstrong\u003eH16 suits 35 mm modules and H21 suits 40 mm modules\u003c\/strong\u003e (both Portrait system). \u003cstrong\u003eNote a data conflict on the H27 clamp:\u003c\/strong\u003e GSE's Landscape-specific clamp compatibility table lists the H27 middle clamp (ART106723) as suited to \u003cstrong\u003e30–32 mm\u003c\/strong\u003e module frames, while GSE's general clamp engineering datasheet lists H27 as suited to \u003cstrong\u003e45–46 mm\u003c\/strong\u003e modules on standard frames. This may reflect a difference between the Landscape and Portrait frame systems, or a labelling variation between documents.\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; margin-bottom: 8px; font-size: 15px;\"\u003eSecure Module-to-Module Fixing\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.55; color: #333333;\"\u003eClamps \u003cstrong\u003etwo adjacent PV module frames\u003c\/strong\u003e down onto the half-frame at a single shared fixing point, keeping the array secure and evenly tensioned across each row.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; margin-bottom: 8px; font-size: 15px;\"\u003eFour Sizes Across Two Systems\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.55; color: #333333;\"\u003eCovers \u003cstrong\u003eH16 (35 mm), H21 (40 mm), and H27 (45–46 mm)\u003c\/strong\u003e module thicknesses, spanning the Portrait system (H16, H21) and the Landscape system (H27), including both current and V2023-generation GSE parts.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; margin-bottom: 8px; font-size: 15px;\"\u003eEPDM Seal Pre-Fitted\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.55; color: #333333;\"\u003eAll four variants are supplied with the \u003cstrong\u003eEPDM sealing wedge already fitted\u003c\/strong\u003e to the clamp body, simplifying installation and reducing separate parts to source.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; margin-bottom: 8px; font-size: 15px;\"\u003eBlack Finish\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.55; color: #333333;\"\u003eA \u003cstrong\u003eblack finish\u003c\/strong\u003e across the range, to blend with dark roof tiles and black-framed modules.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; margin-bottom: 8px; font-size: 15px;\"\u003eSteel Construction\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.55; color: #333333;\"\u003eBuilt from \u003cstrong\u003esteel\u003c\/strong\u003e for a robust, durable fixing point designed to withstand UK weather conditions over the system's service life.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-top: 3px solid #008377CF; border-radius: 8px; padding: 16px; margin: 6px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #00625d; margin-bottom: 8px; font-size: 15px;\"\u003eSimple Combi-Drill Fitting\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; line-height: 1.55; color: #333333;\"\u003eFits with a \u003cstrong\u003estandard combi drill\u003c\/strong\u003e at a controlled torque. GSE explicitly advises against impact drivers, which can over-tighten and deform the clamp or frame.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #00625d; margin: 32px 0 14px 0; padding-bottom: 8px; border-bottom: 2px solid #008377CF;\"\u003eVariant Comparison\u003c\/div\u003e\n\u003cdiv style=\"margin: 18px 0 8px 0; border: 1px solid #D9EDEA; border-top: none; border-radius: 6px; overflow: hidden;\"\u003e\n\u003cdiv style=\"display: flex; background: #008377CF; border-radius: 6px 6px 0 0;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; font-size: 13px; color: #fff; text-transform: uppercase; letter-spacing: 0.03em;\"\u003eVariant\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; font-size: 13px; color: #fff; text-transform: uppercase; letter-spacing: 0.03em;\"\u003eClamp Size\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; font-size: 13px; color: #fff; text-transform: uppercase; letter-spacing: 0.03em;\"\u003eModule Thickness\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; font-size: 13px; color: #fff; text-transform: uppercase; letter-spacing: 0.03em;\"\u003eSystem\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; font-size: 13px; color: #fff; text-transform: uppercase; letter-spacing: 0.03em;\"\u003eEPDM Seal\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-weight: bold; font-size: 13px; color: #fff; text-transform: uppercase; letter-spacing: 0.03em;\"\u003eManufacturer Ref\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eMid Clamp with EPDM – Black (H16)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eH16\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003e35 mm\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003ePortrait\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003ePre-fitted\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eART100482\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eMid Clamp Double V2023 EPDM – Black (H16)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eH16\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003e35 mm (30 mm on P33 frames)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003ePortrait (current generation)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003ePre-fitted (EPDM foam attached)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eART105904\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eMid Clamp – Black (H21)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eH21\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003e40 mm\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003ePortrait\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003ePre-fitted\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eART100744\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eLandscape Middle Clamp 30mm EPDM – Black (H27)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eH27\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003e30–32 mm (Landscape table) \/ 45–46 mm (general clamp datasheet)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eLandscape\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003ePre-fitted\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 12px; font-size: 14px; color: #222;\"\u003eART106723\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #00625d; margin: 32px 0 14px 0; padding-bottom: 8px; border-bottom: 2px solid #008377CF;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; padding: 9px 16px; border-radius: 6px 6px 0 0; margin-top: 18px;\"\u003eGeneral\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 4px;\"\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eProduct Type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eSolar PV in-roof mounting clamp (mid \/ double clamp)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eSystem Compatibility\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eGSE In-Roof System — Portrait and Landscape half-frame ranges (variant-dependent)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eFinish\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eBlack\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eAlso Known As\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eDouble clamp (per GSE installation manual terminology)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; padding: 9px 16px; border-radius: 6px 6px 0 0; margin-top: 18px;\"\u003eConstruction\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 4px;\"\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eSteel body with EPDM seal\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eEPDM Seal\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003ePre-fitted on all three variants — no separate seal required\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; padding: 9px 16px; border-radius: 6px 6px 0 0; margin-top: 18px;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 4px;\"\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eFunction\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eSecures the frames of two adjacent PV modules to the mounting frame at a shared fixing point\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eRequired Accessories\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eGSE fixing screw and washer (sold separately)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 46%; padding: 9px 16px; font-weight: 600; color: #333; font-size: 14px;\"\u003eFitting Tool\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 9px 16px; color: #222; font-size: 14px;\"\u003eStandard combi drill — do not use an impact driver\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FDECEC; border-left: 4px solid #D32F2F; padding: 14px 18px; margin: 18px 0; border-radius: 4px; font-size: 15px; line-height: 1.55; color: #333333;\"\u003e\n\u003cdiv style=\"font-weight: bold; margin-bottom: 4px; color: #d32f2f;\"\u003eImportant Safety Information\u003c\/div\u003e\nIn-roof installation involves working with roof structure, weatherproofing, and electrical connections. Installation must follow GSE's official installation manual and comply with \u003cstrong\u003eMCS, local building regulations, and electrical safety standards\u003c\/strong\u003e. Use a qualified, trained installer.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 19px; font-weight: bold; color: #00625d; margin: 32px 0 14px 0; padding-bottom: 8px; border-bottom: 2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #F7FAFA;\"\u003e\u003cspan\u003eWhich variant do I need — H16, H21, or H27?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eThis depends on your \u003cstrong\u003emodule thickness and frame system\u003c\/strong\u003e. Per GSE's general clamp engineering datasheet: \u003cstrong\u003eH16 suits 35 mm modules, H21 suits 40 mm modules\u003c\/strong\u003e, both on the \u003cstrong\u003ePortrait\u003c\/strong\u003e In-Roof system. The H27 clamp (Landscape system) has \u003cstrong\u003econflicting sizing across GSE's own documentation\u003c\/strong\u003e — see the note above — so confirm this one directly with GSE or your distributor. Always check your specific module's datasheet for its exact thickness before ordering.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #F7FAFA;\"\u003e\u003cspan\u003eWhat's the difference between ART100482 and ART105904?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eBoth are H16 double clamps for the Portrait system with a pre-fitted EPDM seal, sized for 35 mm modules on GSE's standard frames. \u003cstrong\u003eART105904 is GSE's current V2023-generation part\u003c\/strong\u003e with EPDM foam factory-attached; ART100482 is the equivalent clamp from GSE's earlier part numbering.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #F7FAFA;\"\u003e\u003cspan\u003eWhat module thickness is the H21 clamp for?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eThe H21 mid\/double clamp (ART100744) is sized for PV modules with a \u003cstrong\u003e40 mm thickness\u003c\/strong\u003e on GSE's standard In-Roof frames, per GSE's official clamp engineering datasheet.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #F7FAFA;\"\u003e\u003cspan\u003eDoes this clamp come with the EPDM seal?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eYes — all four variants are supplied with the \u003cstrong\u003eEPDM sealing wedge or foam pre-fitted\u003c\/strong\u003e, so no separate seal needs to be ordered.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #F7FAFA;\"\u003e\u003cspan\u003eDo I need anything else to fit this clamp?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eYou will still need a \u003cstrong\u003ematching GSE fixing screw and washer\u003c\/strong\u003e, sold separately, to secure the clamp to the frame.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #F7FAFA;\"\u003e\u003cspan\u003eCan I use an impact driver to fit this clamp?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eNo. GSE's installation guidance specifically advises against impact drivers for clamp fixing, as they can drive the screw too far and \u003cstrong\u003edeform the clamp or the module frame\u003c\/strong\u003e. Use a standard combi drill with controlled torque instead.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #F7FAFA;\"\u003e\u003cspan\u003eWhat does 'double clamp' mean?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #fff;\"\u003eGSE's installation manual refers to the mid clamp as a \u003cstrong\u003edouble clamp\u003c\/strong\u003e because it secures two adjacent module frames at once, at the point where they meet within a row.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"GSE","offers":[{"title":"H16 EPDM","offer_id":65801732227421,"sku":"ART100482","price":2.75,"currency_code":"GBP","in_stock":true},{"title":"H16 V2023 EPDM","offer_id":65801732260189,"sku":"ART105904","price":3.2,"currency_code":"GBP","in_stock":true},{"title":"H21","offer_id":65801898590557,"sku":"ART100744","price":2.7,"currency_code":"GBP","in_stock":true},{"title":"H27 EPDM","offer_id":65801732292957,"sku":"ART106723","price":2.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Mid_Clamp_Double_V2023_EPDM_-_H16_ART105904.jpg?v=1788451141","url":"https:\/\/qualityheating.co.uk\/products\/gse-mid-clamp-black-roof-integrated-solar-pv-mid-clamp-with-epdm-seal","provider":"AIZO Quality Heating","version":"1.0","type":"link"}