Size: Strictly correspond to the size of the connected conduit or trunking (such as conduit fittings with dimensions of Φ 16, Φ 20, and Φ 25mm); 39x19mm, 50x25mm trunking accessories).
Connection methods: adhesive type (using PVC special adhesive for permanent sealing connection), threaded type (with threaded locking function), spring buckle type (cable tray cover plate).
Protection level: Some accessories (such as waterproof lock nuts) can provide a higher IP protection level (such as IP65), suitable for outdoor or humid places.