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Galvanized steel wiring trough 4 by 4 by 36 inches screw cover NEMA 3R

Wiegmann

Wiegmann RSCG040436NK wiring trough, 4×4×36 in, 16 ga galvanized steel, NEMA 3R

SKU CH-D4GM-GXMCA

A 36-inch galvanised steel wiring trough with screw cover and NEMA 3R protection for indoor or outdoor cable runs

  • TypeCable Management & Conduit
  • NEMA 3R rating protects wiring from rain and sleet
  • 16-gauge galvanized steel resists corrosion in outdoor environments
  • 36-inch length provides extended cable routing space
  • 78-inch usable depth accommodates multiple conduit runs
  • No knockouts allow custom entry placement for flexible installation

Wiegmann RSCG040436NK wiring trough

The Wiegmann RSCG040436NK is a 36-inch long wiring trough made from 16-gauge pre-galvanized steel. It provides a straight, protected pathway for electrical conductors in indoor or outdoor environments. The NEMA 3R rating means the enclosure sheds rain and sleet while resisting external ice formation. It is suited for commercial and industrial installations that require a durable, non-ventilated cable raceway.

Upgrading from open trays or unrated channels

This trough replaces open cable trays, wooden raceways or enclosures without a NEMA rating when the installation demands weather protection and mechanical strength. The jump is worth it when local codes require a listed enclosure for exposed runs or when physical damage to cables is a concern. The screw-cover design allows secure access without special tools, and the absence of knockouts lets the installer place entries exactly where needed.

Build integration: mounting and capacity

The trough measures four inches by four inches inside, giving a usable opening depth of 3.78 inches for cable fill. Mounting holes are spaced 28 inches apart in both height and width, aligning with common structural framing. The galvanized finish requires no field painting and resists corrosion in damp locations. The enclosure ships as a single piece with the cover attached, ready for conduit fittings or cable glands at any point along its length.

Highlights

  • NEMA 3R rating protects wiring from rain and sleet
  • 16-gauge galvanized steel resists corrosion in outdoor environments
  • 36-inch length provides extended cable routing space
  • 78-inch usable depth accommodates multiple conduit runs
  • No knockouts allow custom entry placement for flexible installation

Specifications

BrandWIEGMANN
TypeCable Management & Conduit

Questions about this item

What are the mounting-hole dimensions for the 4×4×36 in trough?

The mounting holes are spaced 28 in apart on both height and width, matching the RSCG series pattern for secure wall or rack attachment.

How do you fasten the screw cover, and what step is often missed?

Align the cover, insert the supplied screws through the cover holes into the body threads, and torque evenly; the step often missed is confirming the gasket is not required so no sealant is applied.

What part of the 16 ga galvanized steel trough may need replacement after years of outdoor NEMA 3R exposure?

The galvanized finish can degrade over long UV and moisture cycles; plan to inspect the coating annually and touch up any white-rust spots with cold-galvanizing compound.

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