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The Unirac 185RLM1-US is a premium 185-inch (approximately 15.4 ft) standard mill-finish rail engineered specifically for the NXT UMOUNT open-channel rail-based racking system. This high-performance domestic-content rail delivers the perfect balance of lightweight design, structural strength, and installer-friendly features. Its innovative open-channel profile enables seamless integrated wire management while supporting fast, efficient installations on residential and commercial pitched-roof solar projects. Key Features & Benefits: Domestic Content Compliant: Fully supports projects seeking Domestic Content Bonus Credit incentives under IRS guidelines. Open-Channel Design: Provides effortless drop-in wire management options and simplifies accessory placement without additional hardware. Optimized Structural Performance: Engineered for excellent span capabilities and load handling within the NXT UMOUNT system, helping reduce the total number of attachments required. Mill Finish: Clean, natural aluminum finish offers maximum compatibility across all NXT components and delivers outstanding value. Length Efficiency: The 185″ length is ideal for minimizing rail splices on typical array layouts, saving time and reducing potential weak points. Full System Integration: Works seamlessly with the complete NXT UMOUNT family, including structural splices, combo clamps, StrongHold attachments, and wire management solutions. Easy Handling & Installation: Lightweight yet rigid extrusion speeds up rooftop handling while maintaining superior durability and long-term performance. Specifications: Part Number: 185RLM1-US Length: 185 inches (15.42 ft) Finish: Mill Material: High-strength extruded aluminum System Compatibility: NXT UMOUNT and NXT Horizon rails Certifications: Part of fully UL 2703 and UL 3741 compliant systems This rail is the go-to choice for installers who demand reliable, domestically sourced components that accelerate project timelines, lower labor costs, and deliver professional, high-performing solar arrays with excellent aesthetics and long-term reliability.