Dimensions of Fiberglass Ladder-Type Cable Trays

Ladder-type fiberglass cable trays typically feature widths from 150mm to 450mm, rung spacing of 9. 25 inches, and are constructed with two longitudinal side rails connected by transverse rungs.

Typical Dimensions

Width: Common widths include 150mm, 300mm, and 450mm for standard applications, with custom widths available for specific projects.

Depth/

Side Rail Height: Side rails generally range from 50mm to 150mm, depending on load requirements and resin system used. Rung Spacing: Standard rung spacing is 9. 25 inches (approximately 235mm), providing consistent support for cables while allowing ventilation.

Length: Straight sections are typically 10 feet (3 meters) or 20 feet (6 meters), pre-drilled for connector plates, though custom lengths can be fabricated.

Rung Width/

Support Surface: Rungs provide a 2-inch (50mm) cable support surface, ensuring stability for multiple cables.

Structural Features

Side Rails: Two longitudinal members form the main structural support, often with Z-channel profiles for added strength. Rungs: Transverse members connect the side rails, forming a ladder-like structure that supports cables and allows airflow for heat dissipation. Materials: Fiberglass reinforced plastic (FRP) with polyester or vinyl ester resin is used, offering corrosion resistance, UV protection, and fire retardancy.

Fittings: Mitered or molded fittings maintain the same load capacity as straight sections, with pre-drilled holes for easy assembly.

Applications and Considerations

Ideal for industrial, chemical, offshore, and marine environments due to corrosion resistance and non-conductive properties. Proper storage is recommended to prevent UV degradation and maintain structural integrity, including indoor storage or covering outdoor trays. Covers are available for additional protection against environmental elements, such as snow or dust.

These dimensions and features make ladder-type fiberglass cable trays a versatile and durable solution for supporting and organizing electrical cables in harsh or specialized environments.