Solid Wall Wiring Duct,4 In.x3 In.,6ft, Wall Type Solid Wall, Width 4 1/4 in, Height 3 1/8 in, Material Lead-Free PVC, Color Gray, Mounting Style Screw Mount, Length 72 in, Standards CE Compliant, CSA Certified, NFPA 79-2015 Section 13.3.1, RU Certified, UL 94 Flammability Rating of V-0, Compatible Cover Style Snap-On, Nominal Height 3 in, Nominal Width 4 in