K2 Systems Cross Clamp Set End-Mid Clamp 4000135-US (50 pcs)

The K2 Systems 4000135-US Cross Clamp Set is a versatile universal module clamp engineered for secure solar panel attachment within K2 CrossRail mounting systems. Designed to function as both an end clamp and a mid clamp, this innovative clamp solution simplifies inventory management while speeding up installation time.

Featuring a redesigned one-tool, one-handed installation system, the Cross Clamp supports module frame heights from 30 mm to 45 mm while maintaining a clean 1/2-inch inter-module gap. Constructed from high-strength aluminum and stainless steel, the clamp delivers long-term durability and corrosion resistance for rooftop solar installations.

Key Technology

• Dual End & Mid Clamp Functionality
  One clamp design serves as both a mid clamp and end clamp, simplifying installation logistics and reducing SKU requirements. 

• One-Handed Installation
  Redesigned clamp geometry enables quick and efficient installation using a single tool. 

• 30–45 mm Module Compatibility
  Supports a wide range of framed solar module thicknesses for installation flexibility.

• Integrated Bonding Capability
  UL 2703 listed clamp system provides electrical bonding when installed with compatible K2 rail systems. 

• 6000 Series Aluminum Construction
  Provides lightweight structural strength and excellent corrosion resistance.

• 304 Stainless Steel Hardware
  Ensures long-term durability and reliable fastening performance in outdoor environments. 

• Minimal Inter-Module Gap
  Maintains a clean array appearance with approximately 1/2-inch spacing between modules.

• CrossRail Compatibility
  Compatible with K2 CrossRail 44-X, 48-X, 48-XL, and 80 rail systems.

Best Uses

• Residential Solar Installations
  Provides secure module attachment for rooftop PV systems.

• CrossRail Mounting Systems
  Designed specifically for use with K2 CrossRail racking platforms.

• Inventory Optimization
  Reduces inventory complexity by functioning as both end and mid clamp.

• Fast Solar Installations
  Supports rapid rooftop installation with simplified clamp assembly.

Warranty

• Manufacturer Warranty: 25-Year Limited Warranty

Product Specifications

Fast, Flexible, and Reliable Module Clamping

The K2 Systems Cross Clamp Set 4000135-US combines universal compatibility, simplified installation, and durable construction—making it an ideal solution for efficient and professional solar module mounting.

Why Buy From US Solar Supplier

US Solar Supplier is an American-founded company based in Kentucky dedicated to offering top-quality solar components from trusted manufacturers. We provide competitive pricing, dependable inventory, and products backed by warranties you can trust.

Our inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.

Need Assistance?

Have questions before you order? Call 1-800-230-7004 to speak with our knowledgeable support team. We’re here to help with product details, compatibility questions, or purchasing support.