The Renusol VarioSole+ (VS+) mounting rail is an aluminium rail profile supplied at 50 x 37mm in a 4.8m length, designed for use within the Renusol VS+ on-roof mounting system for pitched roofs. This is the high-load rail in the VS+ range, engineered for greater span and loading capacity than the smaller 41 x 35mm medium-load profile, while sharing the same roof hooks, clamps, and connecting hardware across the platform.
This rail is available in two finishes: the standard mill/silver aluminium finish (REN-400571) and a black finish (REN-400571-B) for a lower-visibility, premium roofline appearance. Both are the same 50 x 37mm profile at the same 4.8m length, and are identical in structural specification, material, and certification — the black finish is a cosmetic option only.
0.593 kg/m
Weight per Metre
10 – 45°
Roof Pitch Range
Important: Renusol Components Only
The Renusol VarioSole+ system is designed exclusively for use with genuine Renusol mounting hardware. Combining this rail with roof hooks, clamps, or fixings from other manufacturers will void the system warranty and may compromise structural stability — do not mix components across brands.
Please Note: Confirm Rail Selection Before Ordering
This is the 50 x 37mm high-load rail. A separate 41 x 35mm medium-load rail is also available in the VarioSole+ range for lighter-duty applications. Check your project's structural calculation (via the Renusol PV Configurator or your designer) to confirm which profile and finish is specified before ordering — REN-400571 (silver) and REN-400571-B (black) are structurally identical, differing only in finish.
Good to Know: Structural Design Support Available
Renusol provides a free PV Configurator design tool that generates a full assembly plan, parts list, and structural calculation — including wind and snow load import — for VS+ installations. This is the recommended route for confirming rail spans, fixing centres, and load compliance for your specific roof and module combination.
High-Load Profile
The 50 x 37mm cross-section is the high-load rail in the VS+ range, giving greater span capacity and structural margin than the medium-load 41 x 35mm profile for larger or more demanding installations.
Modular VS+ Platform
Part of Renusol's modular VarioSole+ system, where roof connection, rail, and clamping components are interchangeable across the range — reducing the parts an installer needs to stock.
Choice of Finish
Available in standard silver aluminium or black, letting installers match the rail finish to the roof covering and module frame colour for a cleaner overall appearance.
Universal Roof Compatibility
Designed to work with roof hooks, hanger bolts, and standing seam clamps, allowing the same rail to be used across tile, slate, sheet metal, sandwich panel, and fibre-cement roof coverings.
Adjustable Clamping
Pairs with Renusol's universal module clamps, which adjust for different PV frame heights and support both horizontal (landscape) and vertical (portrait) module orientation.
TÜV & MCS Certified
Certified under TÜV ID 1111212485 and MCS012 IK0197/03, supporting compliance documentation for UK domestic and commercial PV installations.
| System Information |
| System |
VarioSole+ (VS+) |
| Component Type |
Mounting rail — high-load profile |
| Physical Specification |
| Profile Dimensions |
50 x 37mm |
| Length |
4800mm (4.8m) |
| Weight |
0.593 kg per metre (approx. 2.85 kg per rail) |
| Material |
Aluminium |
| System Compatibility |
| Roof Pitch Range |
10° – 45° |
| Roof Coverings |
Tile, slate, sheet metal (trapezoidal/corrugated), sandwich panel, fibre-cement |
| Application Area |
Pitched roof — commercial, industrial, agricultural, and residential buildings |
| Module Compatibility |
Framed PV modules, frame height 30 – 50mm |
| Module Orientation |
Horizontal (landscape) or vertical (portrait) |
| Roof Connection Methods |
Roof hooks, hanger bolts, standing seam clamps |
| Compatible Load Classes |
High load (this rail) and medium load (41 x 35mm rail) within the VS+ range |
| Certification & Warranty |
| TÜV Certification |
TÜV ID 1111212485 |
| MCS Certification |
MCS012 IK0197/03 |
| System Warranty |
10 years |
| Part No. |
Finish |
Profile |
Length |
Weight |
| REN-400571 |
Silver / mill aluminium |
50 x 37mm |
4800mm |
0.593 kg/m |
| REN-400571-B |
Black |
50 x 37mm |
4800mm |
0.593 kg/m |
What's the difference between REN-400571 and REN-400571-B?
Finish only. Both are the same 50 x 37mm profile at the same 4.8m length, with identical structural specification and certification. REN-400571 is the standard silver aluminium finish; REN-400571-B is finished in black for a lower-visibility roofline appearance.
What roof types is this rail suitable for?
The Renusol VS+ system covers tile, slate, sheet metal, sandwich panel, and fibre-cement roof coverings, on roof pitches between 10° and 45°, using the appropriate roof hook or fixing for the covering type.
Can I mix this rail with roof hooks or clamps from another brand?
No. Renusol specifies that VS+ components must only be used with genuine Renusol mounting hardware. Mixing brands will void the system warranty and may affect structural performance.
How does this compare to the 41 x 35mm VarioSole+ rail?
This 50 x 37mm rail is the high-load profile in the VS+ range, offering greater span and loading capacity than the smaller 41 x 35mm medium-load rail. Your project's structural calculation determines which is required.
How is rail span and loading confirmed for my project?
Renusol provides a free PV Configurator tool that produces a full structural calculation, assembly plan, and parts list based on your roof, module, and location-specific wind/snow loads.
What module clamp type is used with this rail?
The VS+ rail pairs with Renusol's universal module clamps, which are adjustable for different PV frame heights (30–50mm) and support both middle and end clamping positions.
