# Long Rail Solar Mounting Structure > Long Rail purlin-mounted aluminium solar structure for industrial and asbestos roofs. Ultra, Light & Pro variants, fewer roof punctures, 200 km/h rated. Source: https://www.sunmount.in/products/long-rail Manufacturer: Sunmount Solutions Private Limited, Surya Koti, Bajekan-Sirsa Main Road, Sirsa, Haryana 125055, India Quote: https://www.sunmount.in/contact · sales@sunmount.in · +91 78379 99222 Catalogue (PDF): https://www.sunmount.in/catalogue.pdf Heavy-duty purlin-mounted aluminium rail for industrial buildings, asbestos cement roofs and high wind-load zones. Three variants — Ultra, Light and Pro — spanning every load and orientation requirement. ## Long Rail Ultra *Heavy-Duty · Landscape* **Maximum load-bearing capacity — the go-to solution for extreme wind environments and industrial structures.** The Long Rail Ultra is SunMount's heaviest-duty purlin-mounted rail. Its increased cross-section and wall thickness deliver higher bending stiffness, enabling wider purlin spacings without additional support. The system is certified for wind speeds up to 200 km/h and is ideal for large-span industrial sheds and coastal environments where load-to-weight ratio is critical. ### Highlights - Maximum bending stiffness — widest purlin spacing - Rated up to 200 km/h wind speed - Fewer roof penetrations vs Mini/Mono Rail - Reuses existing J-bolt holes on asbestos sheets - Universal for any trapezoidal crest profile - FEA & wind load analysis certified **Applications:** Industrial shed, Large-span factory, Coastal installation, Asbestos cement roof ### Specifications | Specification | Value | | --- | --- | | Profile Height | 50 mm (PRO grade) | | Panel Thickness | 30 mm · 35 mm · 40 mm | | Material | Aluminium 6063 T6 · SS 304 · EPDM | | Design Wind Speed | Up to 200 km/h | | Mounting | Purlin-mounted | | Orientation | Landscape | | Roof Types | Metal sheet · Asbestos cement | | Finish | Anodized / Non-anodized | ## Long Rail Light *Standard · Landscape* **Economical purlin-mounted rail for landscape orientation — fewer penetrations, faster installation.** The Long Rail Light is a lighter, more economical variant of the purlin-mounted system, optimised for landscape-orientation panels. Its reduced material cross-section keeps project costs lower while still delivering far fewer roof penetrations than Mini or Mono Rail installations. Compatible with existing self-drilling screw holes on asbestos sheets, making retrofits simple. ### Highlights - Cost-effective purlin-mounted solution - Landscape orientation — wide row coverage - Fewer roof penetrations vs Mini/Mono Rail - Uses existing self-drilling screw holes - Compatible with asbestos cement roofs - Easy installation & maintenance **Applications:** Industrial shed, Warehouse, Asbestos roof, Light commercial ### Specifications | Specification | Value | | --- | --- | | Profile Height | 30 mm (LITE grade) | | Panel Thickness | 30 mm · 35 mm · 40 mm | | Material | Aluminium 6063 T6 · SS 304 · EPDM | | Design Wind Speed | Up to 200 km/h | | Mounting | Purlin-mounted | | Orientation | Landscape | | Roof Types | Metal sheet · Asbestos cement | | Finish | Anodized / Non-anodized | ## Long Rail Pro *Premium · Landscape* **Premium grade with the highest load capacity — engineered for landscape arrays on the most demanding structures.** The Long Rail Pro is the flagship of the Long Rail range, combining the greatest cross-section wall thickness with a robust profile optimised for landscape panel orientation. It is designed for premium commercial and industrial projects where structural engineers require the highest certified load ratings, the widest allowable purlin spacings, and a single-rail solution across large landscape arrays. ### Highlights - Highest load rating in the Long Rail range - Optimised for landscape orientation - Maximum permitted purlin spacing - FEA-certified for extreme wind zones - Single-rail solution for large landscape arrays - Compatible with all PV module brands **Applications:** Premium commercial, Large landscape array, Extreme wind zone, Large-span industrial ### Specifications | Specification | Value | | --- | --- | | Grade | PRO (maximum wall thickness) | | Panel Thickness | 30 mm · 35 mm · 40 mm | | Material | Aluminium 6063 T6 · SS 304 · EPDM | | Design Wind Speed | Up to 200 km/h | | Mounting | Purlin-mounted | | Orientation | Landscape | | Roof Types | Metal sheet · Asbestos cement | | Finish | Anodized / Non-anodized | ## Compare Long Rail System variants | Specification | Long Rail Ultra | Long Rail Light | Long Rail Pro | | --- | --- | --- | --- | | Profile Height | 50 mm (PRO grade) | 30 mm (LITE grade) | — | | Panel Thickness | 30 mm · 35 mm · 40 mm | 30 mm · 35 mm · 40 mm | 30 mm · 35 mm · 40 mm | | Material | Aluminium 6063 T6 · SS 304 · EPDM | Aluminium 6063 T6 · SS 304 · EPDM | Aluminium 6063 T6 · SS 304 · EPDM | | Design Wind Speed | Up to 200 km/h | Up to 200 km/h | Up to 200 km/h | | Mounting | Purlin-mounted | Purlin-mounted | Purlin-mounted | | Orientation | Landscape | Landscape | Landscape | | Roof Types | Metal sheet · Asbestos cement | Metal sheet · Asbestos cement | Metal sheet · Asbestos cement | | Finish | Anodized / Non-anodized | Anodized / Non-anodized | Anodized / Non-anodized | | Grade | — | — | PRO (maximum wall thickness) | ## Long Rail System FAQ ### Where is the Long Rail System used? Typical applications: Industrial shed, Large-span factory, Coastal installation, Asbestos cement roof, Warehouse, Asbestos roof, Light commercial, Premium commercial, Large landscape array, Extreme wind zone, Large-span industrial. ### What wind speed is the Long Rail System rated for? Up to 200 km/h design wind speed. Fixing spacing is set from each site's design wind speed. ### Which variants of the Long Rail System are available? 3 variants: Long Rail Ultra (Heavy-Duty · Landscape); Long Rail Light (Standard · Landscape); Long Rail Pro (Premium · Landscape). ### Which module frame thicknesses does it fit? 30 mm · 35 mm · 40 mm module frames, from any PV module brand. ### What is the Long Rail System made of? Aluminium 6063 T6 · SS 304 · EPDM.