Get yours today!
In the last 7 days
Delivery timeframe shown above at checkout
Unlimited lifetime support, always available.

MPN XR-100-168B | 168" (14 ft) Length | XR100 Heavy Rail | Black Anodized Aluminum | 2" Width | 8.5 lbs | UL 2703 Integrated Grounding | IBC & IRC Compliant | 20-Year Warranty
The IronRidge XR-100-168B is a 168-inch (14-foot) black anodized aluminum solar mounting rail from IronRidge's XR100 Series — the heavy-duty tier of IronRidge's industry-leading XR roof-mount racking platform. At 2 inches wide and 8.5 lbs per 14-foot section, the XR100 is IronRidge's highest-capacity rail profile, engineered for longer spans, higher wind and snow load zones, and larger commercial residential arrays where the lighter XR10 profile's moderate load rating is insufficient. The black anodized finish delivers the same corrosion resistance and structural longevity as IronRidge's standard mill-finish rails — with the additional aesthetic benefit of a low-visibility, low-reflectance black surface that blends with dark-frame modules and modern rooflines for a clean, minimal visual profile. Like all XR Series rails, the XR-100-168B integrates with IronRidge's UL 2703 listed bonding and grounding system, ships with access to pre-stamped PE engineering letters for most U.S. states, and is fully supported by IronRidge's free online design software for site-specific structural calculations and permit-ready bill of materials generation. Backed by IronRidge's 20-year product warranty.
XR100 Heavy Profile — Extended Span & High-Load Capability: The XR100 is IronRidge's heaviest and structurally strongest rail profile, designed for installations where attachment spacing exceeds the XR10's 6-foot moderate-load span limit, or where site-specific wind and snow load calculations require greater bending stiffness. The XR100's wider, deeper cross-section places significantly more aluminum mass away from the neutral bending axis — delivering a higher moment of inertia and therefore greater resistance to deflection under distributed panel loading than the XR10 at equivalent span lengths. For high-wind coastal regions, heavy snow load zones, or commercial-scale residential arrays with wide rafter spacing, the XR100 is the correct rail selection.
Black Anodized Finish — Aesthetic Integration with Dark-Frame Modules: The black anodized finish of the XR-100-168B is a hard-anodized aluminum oxide layer — not paint or powder coat — applied directly to the aluminum substrate through an electrochemical process that converts the surface aluminum to aluminum oxide (Al₂O₃). This produces a finish that is integral to the metal itself, not a surface coating that can chip, peel, or delaminate. Black anodized rails visually disappear beneath the dark frames and black backsheets of modern bifacial and all-black modules, reducing the visible racking footprint and improving the overall aesthetics of the completed array for homeowners who prioritize appearance.
UL 2703 Integrated Grounding — No Separate Grounding Hardware: The XR-100-168B integrates with IronRidge's UL 2703 listed bonding and grounding system, establishing the module-to-rail and rail-to-structure electrical bonding path through the UL-listed UFO clamps and attachment hardware — eliminating separate grounding lugs, WEEB washers, or inter-module bonding jumpers at every module position. This satisfies NEC 2020 §690.43 module bonding requirements without supplemental equipment, reducing both installation labor and material cost per module position across the full array.
Framed & Frameless Module Compatibility: The XR100 rail's continuous T-slot channel accommodates IronRidge UFO end and mid clamps for standard aluminum-framed modules, as well as IronRidge's frameless module clamp hardware for glass-on-glass bifacial and frameless module designs — making the XR-100-168B a single rail solution for installers who work across multiple module product lines or specification projects requiring frameless high-efficiency panels.
Pre-Stamped Engineering Letters — Faster AHJ Permit Approval: IronRidge provides pre-stamped (PE wet-signed) engineering letters covering XR Series installations across most U.S. states, allowing permit packages to be submitted without project-specific structural engineering for standard residential and light commercial applications. Combined with IronRidge's free online design software, a complete AHJ-ready permit package — including stamped engineering letter, site-specific load calculations, and full optimized bill of materials — can be generated and printed within minutes of entering site parameters.
Corrosion-Resistant for Coastal & High-Humidity Environments: Black hard-anodized aluminum provides exceptional corrosion resistance in salt-air coastal environments, high-humidity climates, and industrial areas with airborne chemical exposure — environments where painted or powder-coated finishes can blister, and where unfinished mill aluminum can develop cosmetic oxidation. The anodized oxide layer is non-reactive to most environmental conditions encountered in rooftop solar applications and requires no maintenance, refinishing, or re-coating throughout the 20-year warranty period.
The XR-100-168B rail installs as part of IronRidge's complete XR Series racking system. Roof attachments — FlashFoot2 for composition shingle, Slotted L-Feet for metal roofs, or tile hook variants for tile roofs — are fastened to rafters at the spacing determined by the IronRidge design software's site-specific structural calculation. The XR100 rails are then seated onto the L-Feet and locked into position, and solar modules are mounted to the rails using IronRidge UFO end and mid clamps. The UL 2703 integrated bonding path is established through the clamp contact surfaces, eliminating separate grounding hardware at every module position.
Roof Attachment & Rail Leveling: IronRidge Slotted L-Feet provide up to 1.5 inches of vertical height adjustment at each attachment point, allowing the XR100 rail to be leveled across the full array plane without shimming — critical for black rail installations where any visible rail height variation is more apparent against dark-frame modules than on mill-finish installations. The T-bolt and nut system locks each L-Foot-to-rail connection at the correct height before module installation begins.
Rail Splicing for Long Array Runs: For array configurations requiring continuous rail runs longer than 168 inches, IronRidge XR splice bars join two XR100 rail sections end-to-end at a structural support point — maintaining full structural rail capacity across the splice joint. The 168-inch length is optimized for the most common residential portrait-layout array configurations and minimizes field cut waste. Black splice bars are available to maintain visual consistency with the black anodized rail finish across the full array.
Module Mounting with UFO Clamps: IronRidge UFO (Universal Frame Opening) end and mid clamps slide into the XR100 rail's continuous T-slot channel and can be positioned at any point along the rail length to accommodate any module frame width or array row spacing without drilling. Black UFO clamps are available to match the XR-100-168B's finish for a fully monochromatic black racking appearance. The clamp-to-module-frame and clamp-to-rail contact completes the UL 2703 bonding path from each module frame to the rail and through to the roof structure ground.
| Manufacturer | IronRidge |
| MPN | XR-100-168B |
| Product Type | Solar Mounting Rail — Rooftop Racking |
| Rail Series | XR100 — Heavy Rail (High-Load / Extended Span) |
| Rail Length | 168 inches (14 feet) |
| Rail Width | 2 inches |
| Rail Weight | 8.5 lbs |
| Material | 6105-T5 Extruded Aluminum Alloy |
| Finish | Black Hard-Anodized — Integral Surface, Not Paint or Powder Coat |
| Corrosion Resistance | Yes — Hard-Anodized Aluminum Oxide Surface Layer |
| Grounding System | UL 2703 Integrated Bonding & Grounding — No Separate Hardware Required |
| Building Code Compliance | IBC (International Building Code) | IRC (International Residential Code) |
| Engineering Letters | Pre-Stamped (PE-Signed) — Available for Most U.S. States |
| Design Software | IronRidge Design Software — Free Online | Site-Specific BOM & Stamped Engineering Package |
| Compatible Modules | Framed Aluminum-Frame Modules | Frameless Glass-on-Glass & Bifacial Modules |
| Compatible Attachments | FlashFoot2 | Slotted L-Feet | Tile Hooks | Ground Mount Foot |
| Compatible Clamps | IronRidge UFO End & Mid Clamps (Black Available) | Frameless Module Clamps |
| Application | Residential & Light Commercial Rooftop Solar — Composition Shingle, Metal, Tile |
| Warranty | 20-Year Manufacturer Warranty |
| Feature | XR10 (Mill — XR-10-168M) | XR100 (Black — XR-100-168B) |
|---|---|---|
| Rail Profile Weight | Moderate-Heavy | Heavy — Highest Capacity Profile |
| Max Rafter Span | Up to 6 ft (Moderate Load) | Extended — Per Design Software |
| Rail Width | Narrower Profile | 2 inches |
| Rail Weight (14 ft) | Lighter | 8.5 lbs |
| Finish | Clear Anodized Mill | Black Hard-Anodized |
| Best For | Standard residential — typical rafter spacing, moderate load zones | High-load zones, wider rafter spacing, dark-frame aesthetics, commercial residential |
| UL 2703 Grounding | ✓ Integrated | ✓ Integrated |
| Warranty | 20 Years | 20 Years |
Grounding / Bonding: UL 2703 — Integrated Module Bonding & Grounding System Listed
Building Codes: IBC (International Building Code) | IRC (International Residential Code)
NEC Compliance: NEC 2020 §690.43 — Module Bonding | §690.47 — Grounding Electrode System
Structural Engineering: Pre-Stamped PE Letters Available for Most U.S. States via IronRidge Design Software
Finish Standard: Black Hard-Anodized Aluminum — Integral Oxide Layer, No Paint or Powder Coat
Warranty: 20-Year Manufacturer Warranty on Materials and Workmanship
● Available | Contact us for lead time and pricing
From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.
Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.
Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.
$150 Value - Free Offer (Limited Time Only!) No Strings Attached. Totally Free. Takes Less than 2 Minutes.