Hoffman A6636RT Wire Trough, NEMA 3R, Galvanized, Paint Finish, 6" x 6" x 36": Amazon.com: Industrial & Scientific
Firewall Wire Gutter, with Screws. for Camaro Chevelle El Camino Chevy – John's Classic Cars and Parts
Wiegmann RSCG040424G RSCG-Series NEMA 3R Screw Cover Wiring Trough with Knockouts, Galvanized Steel, 4" x 4" x 24": Electrical Boxes: Amazon.com: Tools & Home Improvement
Wiring Trough: All Lengths, Nema Ratings, and Material