The GSE Mid Clamp – Silver is the central fixing clamp used within the GSE In-Roof System to secure adjacent framed PV modules to their mounting frame. Also referred to as a double clamp in GSE's installation manuals, it sits between two neighbouring modules in a row, clamping both panel frames down onto the half-frame in a single fixing point.
The clamp is supplied in a silver finish and is available in two sizes to suit different PV module thicknesses — H16 (35 mm modules) and H21 (40 mm modules), per GSE's official clamp engineering datasheet. Always confirm the size needed against your specific module's thickness before ordering, as the two sizes are not interchangeable.
2
Sizes Available (H16 / H21)
Silver
Finish
Mid / Double
Clamp Type
1
Clamp Per Fixing Point
GSE
In-Roof System Compatible
—
Screw & EPDM Sold Separately
Good to Know
Per GSE's official clamp engineering datasheet, the mid/double clamp size relates directly to module thickness: H16 suits 35 mm modules, and H21 suits 40 mm modules, on GSE's standard In-Roof frames. Always confirm your specific module's exact thickness before ordering, as clamp sizes are not interchangeable.
Secure Module-to-Module Fixing
Clamps two adjacent PV module frames down onto the half-frame at a single shared fixing point, keeping the array secure and evenly tensioned across each row.
Silver Finish
A silver finish option for installations where a metallic clamp tone is preferred or specified, alongside GSE's black clamp range.
Two Jaw Sizes
Available in H16 and H21 to suit different PV module frame thicknesses — always confirm the correct size for your specific module before ordering.
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.
Requires Screw and EPDM Seal
Each clamp needs a matching fixing screw and washer, plus an EPDM sealing wedge, both ordered separately to complete the fixing point.
Part of the GSE In-Roof System
Designed to work within GSE's wider In-Roof System of half-frames, rails, and flashings, maintaining a consistent, tested mounting assembly across the array.
Technical Specification
General
Product Type
Solar PV in-roof mounting clamp (mid / double clamp)
System Compatibility
GSE In-Roof System — Portrait and Landscape half-frame ranges
Available Sizes
H16 (35 mm module thickness), H21 (40 mm module thickness)
Standard combi drill — do not use an impact driver
Reference
Manufacturer
GSE Intégration
Manufacturer SKU
GSE-MID-H16-S
Good to Know
This clamp is sold individually. GSE's installation manual specifies 8 clamps per PV module across the top, middle, and bottom fixing points — plan your order quantity accordingly, alongside the matching screws and EPDM seals.
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 the H16 and H21 mid clamps?
H16 and H21 refer to different clamp jaw sizes, matched to different PV module frame thicknesses. Selecting the wrong size can result in a loose or over-tight clamp — confirm your module's frame thickness before ordering.
Do I need anything else to fit this clamp?
Yes. Each mid clamp requires a separate fixing screw and washer, plus an EPDM sealing wedge, both sold as separate line items.
What does 'double clamp' mean?
GSE's installation manual refers to the mid clamp as a double clamp because it secures two adjacent module frames at once, at the point where they meet within a row.
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.
Is this clamp compatible with both Portrait and Landscape half-frames?
The mid clamp is part of GSE's shared clamp range used across the In-Roof System, but exact compatibility depends on your module's frame thickness — always check against your specific frame and module combination before ordering.
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