https://unitymfg.com/product/type-3r-wiring-trough-powder-coated/
Type 3R Wiring Trough - Powder Coated | Unity Manufacturing - Enclosure Solutions
Dec 27, 2022 - Designed to protect wiring indoors from dripping water~ or outdoors from rain~ sleet and snow Stock inventory sizes from 4x4x12 to 12x12x144 Custom sizes and...
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https://www.nedco.ca/cnd/Category/Conduit%2C-Tray%2C-Fittings-%26-Accessories/Wiring-Duct%2C-Raceway%2C-Trough/Other-Miscellaneous-Duct-%26-Raceway/Multi-Gard-Multi-Cell-Raceway/c/CT020000800007000030
Multi-Gard Multi-Cell Raceway Other Miscellaneous Duct & Raceway Wiring Duct, Raceway, Trough Nedco
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https://www.gexpro.com/p/7120/nvent-hoffman/wiring-trough-nema-type-12-screw-cover-4-x-4-x-18-gray/783510153700/f4418sc
nVent Hoffman F4418SC :: Wiring Trough, NEMA Type 12, Screw Cover, 4" x 4" x 18", Gray :: Gexpro
Wire Trough, Screw Cover, 14 Gauge Steel, NEMA Type 12, Size: Width: 4 Inch, Depth: 4 Inch, Length: 18 Inch, Gray Polyester Powder Finish, Cat #: F4418SC, Mfr:...