Open Channel Rail-Based Racking System for Residential & Commercial Installations
The Next Level of Rail-Based Racking
overview
NXT UMOUNT® is Unirac’s next-generation flush-mount racking system, engineered for smarter, faster solar installs. Built on decades of experience and installer feedback, NXT UMOUNT combines lightweight strength, sleek aesthetics, and unmatched versatility. Universal clamps, integrated wire management, and click-in rails streamline installation, while STRONGHOLD® waterproof attachments and interference-free splices boost efficiency across any roof type. NXT UMOUNT is built to save time on the roof and elevate your solar installs. This is the next level of design, simplicity, and value—only from Unirac.
Installs on
finishes
Key Features & Benefits
Streamlined Installation
Easy-to-engage rails and clamps reduce install time and labor on the roof.
Truly structural internal splice minimizes attachment count and enables cantilever installations.
Combo clamps serve as both mid and end clamps—fewer parts, faster builds.
MLPE + Ground Lug are integrated into one SKU with a simple twist-in design.
Smart, Integrated Design
Seamless wire management built directly into the open-channel rail.
Structural rail splice allows you to seamlessly extend rail lengths with confidence.
Sleek, refined accessories with optional hidden end clamp for a polished finish.
Maximum Versatility
Two rail profiles meet every project’s structural and span requirements.
The Standard Rail delivers reliable performance for most installations.
HD Rail provides heavy-duty strength with simplicity—supporting spans up to 10½ ft. in nearly all wind zones.
Cross-compatible with a variety of Unirac attachments for flexible designs.
Fully compatible with S-5! metal roof attachments that meet the UL 2703 standard.
Efficiency & SKU Reduction
Fewer SKUs with multifunctional components = simplified inventory and logistics.
One system that works across both residential and commercial applications.
Certifications
Meets the UL 2703 standard.
UL 3741 compliant system for residential and commercial applications.
patented
This product may be protected by one or more U.S. Patents. Visit our patent page to learn more.
NXT UMOUNT is designed to meet domestic content safe harbor guidance requirements.
Unirac’s NXT UMOUNT racking system is designed to meet safe harbor guidance. This domestic rail system retains all the key features that customers value in NXT UMOUNT and can qualify for the 10% Domestic Content Bonus Credit (DCBSCS)!
Under the IRS’s First Updated Safe Harbor Guidance (Notice 2025-08), the NXT UMOUNT racking system may contribute up to 19.6% of the domestic content requirement for a complete PV installation for MLPE-based systems. When paired with select domestic content inverters on the market, the NXT UMOUNT racking system plays a pivotal role in meeting the domestic content threshold!
System Components
To build a fully functional NXT UMOUNT system, the following components are required:
standard Rail Splice
The NXT Structural Rail Splice allows you to seamlessly extend rail lengths with confidence. Unlike traditional or non-structural splices, it’s engineered for true structural performance—no additional attachments required. Supports splicing at both midspan and cantilever points. Simplifies installation without compromising strength.
Attachments
SOLOBOX® COMP
SOLOBOX COMP® redefines rooftop junction box installation with first-in-class butyl-seal technology and integrated flashing for fast, clean, and fully…
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SOLOBOX® RAIL
SOLOBOX RAIL® brings speed, flexibility, and reliability to junction box installation—right on the rail. Designed for universal compatibility with all major…
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GUARDIAN™
GUARDIAN™ delivers reliable protection for pitched roof solar arrays, creating a clean, secure barrier against wildlife and debris. Engineered for durability…
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CONDUIT MOUNT BUTYL
The CONDUIT MOUNT BUTYL is engineered for speed, reliability, and total rooftop efficiency. Designed specifically for 1″ and ¾” conduit—EMT,…
CONDUIT MOUNT 2.0 COMP KIT
Unirac’s CONDUIT MOUNT 2.0 COMP KIT is a quick and reliable solution for managing conduits on the roof. Built with SHED & SEAL technology, this system…
CONDUIT MOUNT TILE KIT
The CONDUIT MOUNT TILE KIT delivers fast, secure conduit attachment for any major tile roof. Designed to fit 1″ and ¾” EMT, rigid, or PVC conduit,…
MLPE Mounts
Unirac’s MLPE Mounts offer a secure solution compliant with the UL 2703 standard for attaching microinverters and power optimizers directly to module frames….
STRONGHOLD™ BUTYL
STRONGHOLD® BUTYL is optimized for use with the NXT UMOUNT® system. Featuring a pre-applied butyl pad, this mount eliminates the need for messy sealants or…
FLASHKIT PRO® & SWITCHBLADE
The FLASHKIT PRO® and SWITCHBLADE deliver fast, code-compliant, and weather-resistant attachment solutions for composition shingle roofs. Both kits feature the…
SOLARHOOKS™
The SOLARHOOKS™ portfolio includes three components that work together but are sold separately: tile hooks, tile replacement flashings, and optional sub…
STANDOFFS
Unirac STANDOFFS deliver strength, versatility, and long-term reliability for solar installations across tile, comp, and flat roofs. Engineered from…
FLASHKIT TILE REPLACEMENT
FLASHKIT TILE REPLACEMENT is Unirac’s complete tile replacement solution—engineered for strength, designed for versatility, and trusted for leak protection….
ADJUSTABLE TILT LEGS
Designed for versatility, Unirac’s Adjustable Tilt Legs work with both the NXT UMOUNT® and SOLARMOUNT® systems, providing a flexible, ballast-free…
FLASHLOC® COMP
FLASHLOC® COMP is one of the fastest, cleanest ways to mount solar on composition shingle and rolled comp roofs. This all-in-one solution eliminates the need…
FLASHLOC® CONCRETE ANCHOR
The FLASHLOC® CONCRETE ANCHOR is the only sealing solution engineered specifically for concrete roof solar applications. Designed to integrate seamlessly with…
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