Unirac Brand Guide: SolarMount, Flashloc, and UL 3741-Compliant Racking Systems
Unirac is one of the longest-established solar mounting manufacturers in North America, with a product portfolio spanning residential flush-mount rails, commercial flat-roof ballasted systems, and ground-mount structures. Headquartered in Albuquerque, New Mexico, Unirac has built its reputation on engineering rigor, UL 2703 and UL 3741 compliance across its entire racking portfolio, and the broadest range of roof attachment solutions in the industry. This guide covers Unirac's product lines, certifications, warranty terms, and technical specifications for contractors specifying Unirac systems.
At PES Supply, we stock 50,000+ SKUs from 169 authorized brands, including the full Unirac product line. Standard delivery is 7-10 business days. Browse our Unirac collection to get started.
Company Overview
Unirac was founded in 1998 and is headquartered at 1411 Broadway Blvd NE, Albuquerque, NM 87102. The company has grown into one of the largest solar racking manufacturers in North America, with an installed base spanning residential, commercial, and utility-scale projects. Unirac operates a UL-accredited testing and development lab in Boulder, Colorado, and an AC 428 compliant lab in Albuquerque, enabling in-house validation, prototyping, and product development.
Unirac's market position is defined by its commitment to comprehensive certification. The company was the first racking manufacturer to achieve UL 3741 compliance across its entire roof racking portfolio, providing a path to NEC 690.12 rapid shutdown compliance without requiring module-level power electronics (MLPEs). This distinction has made Unirac a preferred choice for installers seeking cost-effective rapid shutdown solutions.
Current Product Lines
SolarMount (Flush-to-Roof)
SolarMount is Unirac's flagship rail-based racking system for residential and commercial pitched-roof installations. It is available in two rail profiles:
- Light Rail: Sleek, low-profile rail for regions with minimal snow load. Delivers up to 6-foot spans. Available lengths: 96", 185", 246".
- Standard Rail: The flagship residential rail, supporting spans up to 10 feet for fewer attachments. Available lengths: 96", 185", 246".
SolarMount features universal clamps (30-51mm module thickness), cross-compatible attachments, integrated bonding splices, and compliance with UL 2703 and UL 3741 standards. The SolarMount DCBC (Domestic Content Bonus Credit) variant is manufactured with 100% domestic content, qualifying for the IRS DCBC safe harbor.
NXT UMOUNT
NXT UMOUNT is Unirac's next-generation flush-mount system with integrated system grounding and bonding to UL 2703. Key features include a fully structural internal rail splice with integrated bonding, combination mid/end clamps with integrated bonding, in-rail wire management, and compatibility with framed modules 30-40mm thick. Available in mill or dark anodized finish. Designed per ASCE 7-05, 7-10, and 7-16.
Flashloc Attachment Series
Unirac's Flashloc line represents the industry's most comprehensive roof attachment portfolio:
- Flashloc RM: Powder-coated cast aluminum flat-roof attachment. Supports up to 6,670 lbs ultimate uplift. Compatible with most roofing materials and racking systems. No membrane-specific SKUs or heat welding required.
- Flashloc DUO: All-in-one solution for comp shingle and rolled comp roofs. Engineered for both deck and rafter mounting. Triple seal technology. ASCE 7-10 and 7-16 compliant.
- Flashloc COMP: Fast, clean attachment for composition shingle and rolled comp roofs.
- Flashloc Concrete Anchor: Sealing solution specifically for concrete roof applications. Integrates with standard 3/8" concrete anchors. Internal chamber ensures even sealant distribution.
RM5 (Flat Roof, 5-Degree Ballasted)
RM5 is a south-facing, 5-degree ballasted mounting system for flat-roof commercial installations. Features include snap-in hardware, integrated bonding, optional wind deflectors, 7.5" or 11" row spacing, G235 galvanized steel construction, and compatibility with TPO, EPDM, PVC, mineral cap, and gravel roofs. UL 2703 and UL 3741 listed.
RM10 EVO & GridFlex
RM10 EVO is a 10-degree ballasted flat-roof system with "pop-the-hood" hinged access for single-module O&M. GridFlex 5 and GridFlex 10 are east-west ballasted systems with 10-degree tilt. All are UL 2703 and UL 3741 compliant with 25-year warranties.
EcoFoot 2+ / EcoFoot 5D
EcoFoot is a ballasted flat-roof system with UL 3741 listed PVHCS compliance, supporting both MLPE and UL 3741 rapid shutdown paths.
Unirac Large Array (ULA) Ground Mount
ULA is a ground-mount system using the SolarMount platform with installer-supplied 2" or 3" Schedule 40/80 steel pipe. Features N-S and E-W diagonal bracing, Zone 4 seismic capability, and compatibility with Krinner ground screws. Scales with no upper limit on system size.
Recent Releases (2025-2026)
Unirac has been actively expanding its UL 3741 portfolio, with the most significant recent development being UL 3741 compliance for the RM10 EVO system (published July 2025). The SolarMount DCBC domestic-content line has been expanded to help projects qualify for the IRS Domestic Content Bonus Credit, contributing up to 25.8% of the 40% domestic content requirement. Unirac has also added residential UL 3741 solutions pairing SolarMount and NXT UMOUNT with Tesla Powerwall. The GridFlex 10 received expanded module compatibility to include Type 29 modules. Span charts have been updated to ASCE 7-22 for select systems including NXT UMOUNT HD Rail with Flashloc DUO.
Certifications & Listings
- UL 2703: Grounding/bonding, mechanical loading, and fire classification across all rail systems.
- UL 3741: PV Hazard Control System listing across the entire roof racking portfolio (RM10 EVO, RM10 Legacy, RMDT, RM5, EcoFoot 2+/5D, GridFlex 5/10, NXT UMOUNT, SolarMount). Max system voltage: 1000Vdc.
- UL 2703A: Roof attachment flashing standard for polymer and butyl-based products (Stronghold Butyl, SolarMount Butyl, SFM Butyl).
- UL 1741: Solobox combiner/disconnect/enclosure line.
- ASCE 7-16 / 7-22: Structural design compliance with ASCE 7-05, 7-10, 7-16, and 7-22 wind and snow load standards.
- SEAOC PV1/PV2/PV3: Seismic, wind, and gravity design compliance.
- BABA Compliance: SolarMount DCBC domestic-content line supports Build America, Buy America requirements.
Warranty Terms
Unirac offers a 25-year manufacturer's warranty on all racking systems, covering structural components against defects in materials and workmanship. The warranty applies to rails, attachments, clamps, and bonding hardware. Flashloc attachments are warranted for the life of the solar array with no follow-up resealing required. The warranty is transferable to subsequent system owners.
Popular Products at PES Supply
| Model | Category | Key Specs | Application |
|---|---|---|---|
| SolarMount Standard Rail (185") | Flush-mount rail | 6000-series aluminum, 10 ft max span, UL 2703/3741 | Residential pitched roof, moderate/heavy loads |
| SolarMount Light Rail (185") | Flush-mount rail | Low-profile, 6 ft max span, lightweight | Residential, light snow regions |
| Flashloc DUO | Roof attachment | A380 diecast aluminum, EPDM seals, deck or rafter mount | Comp shingle and rolled comp roofs |
| Flashloc RM | Flat-roof attachment | Cast aluminum, 6,670 lbs ultimate uplift, universal | Commercial flat roofs, all membrane types |
| NXT UMOUNT Rail | Next-gen flush mount | Integrated bonding splice, 30-40mm modules, mill/dark anodized | Residential, premium aesthetics |
Technical Comparison: Unirac vs. Competitors
| Feature | Unirac | IronRidge | SnapNrack |
|---|---|---|---|
| UL 3741 Compliance | Full portfolio (most in industry) | Select systems | Limited |
| Flagship Residential Rail | SolarMount Standard (10 ft span) | XR100 (8 ft span) | Ultra Rail UR-40 |
| Domestic Content Option | Yes (SolarMount DCBC, 100% domestic) | Yes (limited) | Yes (USA line) |
| Flat Roof Systems | RM5, RM10 EVO, GridFlex 5/10, EcoFoot | BX Ballasted | Limited |
| Ground Mount | ULA (pipe-based, scalable) | Yes (SMA ground mount) | Yes (pipe clamp system) |
| Design Software | U-Builder 2.0 | Design Assistant | SnapNrack Design Tool |
| Warranty | 25 years | 25 years | 25 years |
Installation Notes
Roof Type Compatibility
- Composition shingle: Flashloc DUO (deck or rafter mount), Flashloc COMP, Flashkit Pro, L-Foot with flashed standoff.
- Tile roofs: Solar hooks, tile replacement flashings.
- Metal standing seam: S-5! pre-assembled kits, PM-9000S, PM Adjust Slotted.
- Concrete: Flashloc Concrete Anchor with 3/8" concrete anchors.
- Flat roof (membrane): Flashloc RM with #12-#15 roofing screws, or ballasted RM5/RM10/GridFlex systems.
Tools Required
- Drill (not impact driver)
- 5/16" socket
- Torque wrench
- Tape measure and chalk reel
Span Tables & Load Ratings
SolarMount UL 2703 mechanical load ratings (tested at 21.86 sq ft module area):
- Downward design load: 113.5 lb/ft²
- Upward design load: 50.7 lb/ft²
- Down-slope load: 16.13 lb/ft²
Flashloc DUO allowable loads (OSB sheathing mount): Uplift 135 lbs, Downforce 124 lbs, Shear 82 lbs. Rafter mount: Uplift 495 lbs, Downforce 907 lbs. Maximum cantilever: 1/3 span. Thermal breaks required for continuous spliced rail runs exceeding manufacturer limits.
Design parameters supported in U-Builder 2.0: Ground snow load 0-100 psf, wind speed 85-190 mph, roof mean height 0-60 ft, roof pitch 0-45 degrees, Exposure B/C/D.
Frequently Asked Questions
1. What makes Unirac's UL 3741 compliance significant?
UL 3741 certifies that the racking system, inverter, and conductors work together to meet NEC 690.12 rapid shutdown requirements without requiring module-level power electronics (MLPEs). This eliminates the cost and complexity of MLPEs while maintaining firefighter safety compliance. Unirac has the most UL 3741-compliant racking and inverter combinations in the industry.
2. What is the SolarMount DCBC and why does it matter?
The SolarMount DCBC is a version of the SolarMount system manufactured with 100% domestic content. Under IRS safe harbor guidance, it may contribute up to 25.8% of the 40% domestic content requirement for a complete PV installation, qualifying the project for the additional 10% Domestic Content Bonus Credit under the Inflation Reduction Act.
3. Can Flashloc DUO be mounted to deck sheathing without hitting rafters?
Yes. Flashloc DUO is engineered for both rafter and deck mounting. When mounted to OSB sheathing (minimum 7/16"), drive all 6 wood screws. When mounted to a rafter, only 2 screws are needed. Combination deck-and-rafter mounting is also supported, with spans calculated as the average of deck and rafter mount spans.
4. What is the maximum wind speed the SolarMount system is rated for?
U-Builder 2.0 supports design wind speeds from 85 to 190 mph, with Exposure Categories B, C, and D. The actual allowable loads depend on roof geometry, attachment type, and rail profile. Always generate a project-specific design using U-Builder to ensure code compliance.
5. How does the RM10 EVO "pop-the-hood" feature work?
The RM10 EVO features a hinged, one-step vertical swing-up design that allows installers to raise a single module for electrical BOS access and O&M. Simply loosen the north clamps to raise the module for access to junction boxes and wiring beneath the array, then lower and re-torque. This eliminates the need to remove modules entirely for maintenance.
Shop Unirac at PES Supply
PES Supply carries the complete Unirac product line, including SolarMount rails, NXT UMOUNT, Flashloc attachments, RM5/RM10 flat-roof systems, and ULA ground-mount components. With 50,000+ SKUs from 169 authorized brands, we provide the racking hardware and BOS components you need. Orders typically arrive within 7-10 business days.
Browse all Unirac products at PES Supply →
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Written by the PES Supply Editorial Team. Last updated July 2026.