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Tech Brief XR Rail Family Solar Is Not Always Sunny Over their lifetime solar panels experience countless extreme weather events Not just the worst storms in years but the worst storms in 40 years High winds capable of ripping panels from a roof and snowfalls weighing enough to buckle a panel frame XR Rails are the structural backbone preventing these results They resist uplift protect against buckling and safely and efficiently transfer loads into the building structure Their superior spanning capability requires fewer roof attachments reducing the number of roof penetrations and the amount of installation time Force Stabilizing Curve Sloped roofs generate both vertical and lateral forces on mounting rails which can cause them to bend and twist The curved shape of XR Rails is specially designed to increase strength in both directions while resisting the twisting This unique feature ensures greater security during extreme weather and a longer system lifetime Compatible with Flat Pitched Roofs XR Rails are compatible with FlashFoot and other pitched roof attachments IronRidge offers a range of tilt leg options for flat roof mounting applications Corrosion Resistant Materials All Roof XRMount Rails utilizes are made XRof marine grade aluminum Rails along alloy withthen optional protected with an anodized all in one finish attachments Anodizing prevents surface and to secure structural systems corrosion flush while also providing aagainst more attractive residentialappearance roofs

Tech Brief XR Rail Family The XR Rail Family offers the strength of a curved rail in three targeted sizes Each size supports specific design loads while minimizing material costs Depending on your location there is an XR Rail to match XR10 XR100 XR1000 XR10 is a sleek low profile mounting rail designed for regions with light or no snow It achieves 6 foot spans while remaining light and economical XR100 is the ultimate residential mounting rail It supports a range of wind and snow conditions while also maximizing spans up to 8 feet XR1000 is a heavyweight among solar mounting rails It s built to handle extreme climates and spans 12 feet or more for commercial applications 6 spanning capability Moderate load capability Clear anodized finish Internal splices available 8 spanning capability Heavy load capability Clear black anodized finish Internal splices available 12 spanning capability Extreme load capability Clear anodized finish Internal splices available Rail Selection The following table was prepared in compliance with applicable engineering codes and standards Values are based on the following criteria ASCE 7 10 Roof Zone 1 Exposure B Roof Slope of 7 to 27 degrees and Mean Building Height of 30 ft Visit IronRidge com for detailed span tables and certifications Rail Span Load Snow PSF Wind MPH 4 5 4 6 8 10 100 None 120 140 XR10 XR100 160 100 10 20 120 140 160 30 40 100 160 100 160 50 70 160 80 90 160 2014 IronRidge Inc All rights reserved Visit www ironridge com or call 1 800 227 9523 for more information Version 1 11 XR1000 12