Yaomiao 8 Pack 4''x4'' Steel Lay-in End Caps with Knockout Hole, Gray Painted Duct Fittings, Ductwork Accessories for Electrical Ductwork Commercial Buildings and Factory Workshops

8 Steel Lay-in End Caps: receive 8 units of steel lay-in end caps duct fittings, ideal for multiple junction box installations; Home circuit renovation, commercial wiring, or industrial equipment matching all get ample accessory support; These steel lay-in end caps duct fittings can even be shared with peers and friends | 4X4 Inch Size: these lay-in end caps measure 4x4 inches, compatible with electrical junction boxes, wiring boxes, and ductwork accessories of the same specification; The recessed design ensures a tight fit for lay-in end caps duct fittings, no loosening or shaking during application | Convenient Knockout Hole Design: end caps's surface features pre-drilled knockout holes that knock open easily based on wiring needs; Customize conduit access points without drilling, making installation more efficient; This design works seamlessly with lay-in end caps duct fittings, preserving structural strength and protective performance | Sturdy Carbon Steel Construction: these lay-in end caps made from carbon steel with a durable gray painted coating, resistant to corrosion and deformation; Withstanding daily wear in industrial environments, this long-lasting steel junction box cover serves as a dependable accessory for electrical projects; These lay-in end caps duct fittings maintain integrity over time | Wide Application Range: this steel end caps cover installs at the end of enclosed cable trays or running sections; Ideal for sealing and protecting junction boxes, wiring boxes, and cable trays in residential buildings, commercial buildings, and factory workshops; These lay-in end caps duct fittings protect interior wiring effectively, preventing dust and debris from entering