K2 Crossrail 44-X 185″ Rail, Mill – 4000721

K2 Crossrail 44-X 185″ Rail, Mill – 4000721

Model Number: 301-300000-0001

Why Choose K2 CrossRail 44‑X 185″ Rail?

Are you designing a solar mounting system and looking for a strong, reliable rail for horizontal runs? The K2 Crossrail 44-X 185 Rail is engineered to help you achieve structural performance, ease of installation, and compatibility across a wide range of rooftop systems. Whether you’re a solar installer working on residential or commercial rooftops, or an engineer preparing project specifications, this rail delivers consistent quality, durability, and system flexibility.

Key Features

• High‑Quality Aluminum Alloy Construction: Fabricated from 6000‑series aluminum offering excellent strength-to-weight performance.

• Mill Finish (Natural Anodized Appearance): Matches many solar hardware aesthetics and provides good corrosion resistance.

• Long Span Capacity: The length (185 inches or ~4.7 m) supports fewer couplings and fewer joints, reducing labor and potential weak points.

• Full Slot Channeling & Compatibility: Designed to accept T‑bolts, grounding clamps, mid and end clamps, wire management clips, and rail connectors in the 44‑X family.

• UL 2703 & Fire Rating Support: Compatible with CrossRail system’s fire performance class, grounding, and bonding pathways under U.S. and international standards.

• Precision Machining & Tolerance Control: Ensures seamless fit with mating components and maintains proper alignment across long lengths.

Versatile Applications – K2 Crossrail 44-X 185 Rail

Ideal for:

• Residential rooftop systems requiring full-length rails across multiple modules

• Commercial or large rooftop arrays where reducing splices/interconnects is desirable

• Systems that use CrossRail 44‑X family components (clamps, connectors, electrical bonding)

• Designs needing strong rail spans in wind and snow load zones

Why K2 Systems?

K2 Systems is a leading provider of solar mounting hardware known for innovation, engineered reliability, and compatibility across product lines. Their CrossRail family is widely adopted thanks to its structural performance, rigorous testing, and ease of integration with mounting hardware and solar modules. By selecting a component like this 185″ rail, you gain from K2’s ecosystem consistency, documentation support, and long-term quality.

Additional Information

Delivery Information:
All inverters are carefully packed and shipped directly from our trusted suppliers. Delivery times may vary based on location and availability. Please allow up to 5 business days for processing and shipment. Shipping costs are calculated at checkout.

Data Sheet:
For detailed technical specifications, installation guidelines, and more, please refer to the Data Sheet under the corresponding tab on the product page. It contains comprehensive information to help you understand the performance and features of the module.

Customer Support:
If you have any questions or need further assistance, feel free to reach out to us. Our dedicated team is available to support you with product inquiries, installation guidance, and more.