The GSE Portrait End Clamp – Black is used at the outer edges of a PV array within the GSE In-Roof System, securing the end module in each row to the mounting frame. Also referred to as a simple / single clamp in GSE's installation manuals, it is fitted at the start and end of each row where there is no adjacent module to share the fixing point with a mid clamp.
This listing covers the full Portrait end clamp range — H16, H19, H21, H23, H26, H27, and H31 — to suit different PV module thicknesses. GSE clamp sizing is generation-specific: the same clamp size (e.g. H16) corresponds to a different module thickness depending on whether your frames are V2012, V2012-P33, or the current V2020/V2022 generation. Always confirm both your frame generation and module thickness before ordering.
7
Sizes (H16–H31)
Black
Finish
Steel
Construction
End / Simple
Clamp Type
3
Frame Generations Supported
Included*
EPDM Seal (V2023 H16 part)
Good to Know
GSE clamp sizing is tied to frame generation, not a single fixed module thickness. Per GSE's official correlation table (clamps / module thickness), the same clamp size corresponds to a progressively thinner module as the frame generation gets newer — for example, H16 suits 30–32 mm modules on current V2020/V2022 frames, but 35–37 mm modules on the older V2012 generation. Always confirm your exact frame generation and module thickness before ordering.
Secures the Array's Outer Edge
Fitted at the end of each row, clamping the outermost module frame to the mounting frame where there is no neighbouring module to share the fixing.
Four Sizes to Choose From
Available in H16, H21, H26, and H31 to match a wide range of PV module thicknesses across different GSE frame generations.
Generation-Specific Sizing
The correct clamp size depends on your frame generation (V2012, V2012-P33, or V2020/V2022) as well as your module's thickness — always check both before ordering.
EPDM Foam Pre-Attached (V2023 H16)
The current V2023-generation H16 end clamp (ART105897) is supplied with EPDM foam factory-attached, simplifying installation.
Steel Construction
Built from steel for a robust, durable fixing point designed to withstand UK weather conditions over the system's service life.
CE Certified
Certified to CE standards, confirming compliance with applicable EU product safety requirements.
Simple Combi-Drill Fitting
Fits with a standard combi drill at a controlled torque. GSE explicitly advises against impact drivers, which can over-tighten and deform the clamp or frame.
Variant Comparison
Variant
Clamp Size
Thickness — V2020 & V2022
Thickness — V2012 P33
Thickness — V2012
Manufacturer Ref
Single End Clamp V2023 – Black w/ EPDM foam
H16
30–32 mm
32–34 mm
35–37 mm
ART105897
End Clamp – Black
H19
33–34 mm
35–36 mm
38–39 mm
Confirm with distributor
End Clamp – Black
H21
35–36 mm
37–38 mm
40–41 mm
ART100495
End Clamp – Black
H23
37–39 mm
39–41 mm
42–44 mm
Confirm with distributor
End Clamp – Black
H26
40–41 mm
42–43 mm
45–46 mm
Confirm with distributor
End Clamp – Black
H27
42–43 mm
44–45 mm
47–48 mm
Confirm with distributor
End Clamp – Black
H31
45–47 mm
47–49 mm
50 mm
Confirm with distributor
Technical Specification
General
Product Type
Solar PV in-roof mounting clamp (end / simple / single clamp)
System Compatibility
GSE In-Roof System — Portrait half-frame range
Available Sizes
H16, H19, H21, H23, H26, H27, H31
Finish
Black
Also Known As
Simple / single clamp (per GSE installation manual terminology)
H16 Clamp Dimensions
Dimension A
17.8 mm
Dimension B
27.8 mm
Jaw Size
27 x 48 x 25 mm
H21 Clamp Dimensions
Dimension A
22.8 mm
Dimension B
32.8 mm
Construction
Material
Steel
EPDM Seal
Pre-fitted (foam attached) on the V2023-generation H16 part (ART105897); confirm seal inclusion for other sizes with your distributor
Certification
CE
Installation
Function
Secures the end module in a row to the mounting frame at the array's outer edge
Required Accessories
GSE fixing screw and washer, EPDM seal (if not pre-fitted), a structural plastic block, and a GSE left/right wedge — typically sold separately
Fitting Tool
Standard combi drill — do not use an impact driver
Reference
Manufacturer
GSE Intégration
Manufacturer Part References
ART105897 (H16, V2023); ART100495 (H21)
Important Safety Information
In-roof installation involves working with roof structure, weatherproofing, and electrical connections. Installation must follow GSE's official installation manual and comply with MCS, local building regulations, and electrical safety standards. Use a qualified, trained installer.
Frequently Asked Questions
What's the difference between an end clamp and a mid clamp?
An end clamp (also called a simple or single clamp) secures a single module at the outer edge of a row. A mid clamp (double clamp) secures two adjacent modules at once, at the point where they meet within a row.
How do I know which clamp size I need?
Clamp size depends on both your module thickness and your GSE frame generation. On current V2020/V2022 frames: H16 suits 30–32 mm, H21 suits 35–36 mm, H26 suits 40–41 mm, and H31 suits 45–47 mm. These figures shift on the older V2012 and V2012-P33 generations (see the variant table above). Check your module's datasheet for its frame thickness, and confirm your frame generation, before ordering.
What else do I need to fit an end clamp?
In addition to the clamp, GSE's installation guidance calls for a fixing screw and washer, an EPDM seal (unless already fitted), a structural plastic block, and a GSE left/right wedge fitted beneath the mounting plate — typically sold as separate items.
Is the EPDM seal included with this clamp?
The current V2023-generation H16 end clamp (ART105897) comes with EPDM foam pre-attached. For other sizes, confirm with your distributor whether the seal is included or needs to be ordered separately.
Can I use an impact driver to fit this clamp?
No. GSE's installation guidance specifically advises against impact drivers for clamp fixing, as they can drive the screw too far and deform the clamp or the module frame. Use a standard combi drill with controlled torque instead.
BTU & WATT Calculator
Room Dimensions
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Glazing Type
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Triple Glazed
External Walls
0 Wall
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Insulation Level
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Required Heating
0
Watts
0
BTUs
Documentation
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