{"product_id":"navien-60-100-500mm-flue-extension","title":"Navien 60\/100 500mm Flue Extension","description":"\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial, Helvetica, sans-serif; color:#222;\"\u003e\n\u003cdiv style=\"line-height:1.65;color:#222;margin-bottom:20px;\"\u003eThe \u003cstrong\u003eNavien 60\/100 500mm Flue Extension\u003c\/strong\u003e is a genuine 500mm length of 60\/100mm concentric flue pipe, used to extend a flue run to the required length for safe, compliant venting. Whether reaching a more distant external wall, clearing an obstruction, or fine-tuning a vertical roof run, this extension slots directly into Navien's existing 60\/100mm push-fit flue system and is \u003cstrong\u003ecompatible across the full range of Navien boilers\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e500mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eExtension Length\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e60\/100mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eFlue Diameter\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003e0.53 kg\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003ePP\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eMaterial\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003eUniversal\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eNavien Compatibility\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;min-width:110px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:19px;font-weight:800;line-height:1.15;\"\u003eUKCA \/ CE\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;opacity:.92;margin-top:4px;\"\u003eCertification\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecea;border-left:5px solid #c0392b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#8a1f13;font-size:14px;margin-bottom:5px;\"\u003eGas Safe \/ OFTEC Installation Requirement\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eFlue components must only be fitted by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e (gas boilers) or an \u003cstrong\u003eOFTEC registered technician\u003c\/strong\u003e (oil boilers), as part of a compliant flue system that respects the boiler's maximum permitted flue length.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff8e6;border-left:5px solid #b8860b;border-radius:0 8px 8px 0;padding:14px 18px;margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#7a5900;font-size:14px;margin-bottom:5px;\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eThis extension fits Navien's \u003cstrong\u003e60\/100mm concentric flue system\u003c\/strong\u003e, used across the current NCB gas and LCB700 Blue Flame oil boiler ranges. Confirm your boiler model uses the same 60\/100mm flue diameter before ordering — larger-output models may specify an 80\/125mm system instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eWhy This Component\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0 26px;\"\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003ePrecise Length Extension\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eAt exactly \u003cstrong\u003e500mm\u003c\/strong\u003e, this extension lets installers fine-tune a flue run to reach an external wall or roof penetration point without over- or under-shooting the required length.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eUniversal Navien Fit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eEngineered to be compatible with \u003cstrong\u003eall Navien boilers\u003c\/strong\u003e using the 60\/100mm flue system, so it can be mixed and matched with bends, terminals, and other extensions from the same range.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eUKCA \u0026amp; CE Certified\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eCarries both \u003cstrong\u003eUKCA and CE certification\u003c\/strong\u003e, confirming compliance with current UK and European standards for flue components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#e6f4f2;border-left:4px solid #008377CF;border-radius:0 6px 6px 0;padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#00594F;font-size:14.5px;margin-bottom:6px;\"\u003eDurable, Condensate-Resistant Build\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#333;line-height:1.6;\"\u003eManufactured from \u003cstrong\u003edurable plastic (PP)\u003c\/strong\u003e, matching the material used throughout the Navien 60\/100 flue range for long-term resistance to acidic condensate.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin:18px 0 26px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eArticle number\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eGXXX002195\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eProduct type\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eFlue extension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e500mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eFlue diameter\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e60\/100mm concentric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003ePolypropylene (PP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"background:#ffffff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003eUKCA, CE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.04em;text-transform:uppercase;\"\u003eWeight\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;font-weight:600;color:#333;font-size:14px;width:44%;border-bottom:1px solid #e2e2e2;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"background:#f2faf9;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e2e2e2;\"\u003e0.53 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#00594F;border-bottom:3px solid #008377CF;padding-bottom:8px;margin:30px 0 14px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"margin:18px 0 10px;\"\u003e\n\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eWill this extension fit any Navien boiler?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eIt is designed for Navien's 60\/100mm concentric flue system, used across the current NCB gas and LCB700 oil boiler ranges. Check your specific boiler's flue diameter in its installation manual before ordering.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eHow many extensions can I add to a flue run?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eThis depends on your boiler's maximum permitted horizontal or vertical flue length, detailed in its installation manual. Every extension and bend added consumes part of that total allowance.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eIs a 1000mm extension available if I need a longer run?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eYes, Navien also produce a 1000mm flue extension (GXXX002196) for the same 60\/100mm system, sold separately.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:12px 18px;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;\"\u003eCan I fit this flue component myself?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px;font-size:14px;color:#333;line-height:1.65;background:#fff;\"\u003eNo. Flue installation and modification must be carried out by a Gas Safe registered engineer (gas boilers) or OFTEC registered technician (oil boilers) to ensure the completed system remains compliant and safe.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Navien","offers":[{"title":"Default Title","offer_id":65143075012957,"sku":"GXXX002195","price":53.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Navien60-100500mmFlueExtensiongxxx002195.jpg?v=1783094542","url":"https:\/\/qualityheating.co.uk\/products\/navien-60-100-500mm-flue-extension","provider":"AIZO Quality Heating","version":"1.0","type":"link"}