Stainless Steel Door Ring Protective Cover, Access Control Cable Protective Cover, Door Lock System with Access Control Function Stainless Steel Door Ring Protective Cover, Access Control Cable Protective Cover, Door Lock System with Access Control Function Door Ring Protective Cover, Surface-Mounted Cable Protective Cover Door rings are extension covers that can be installed on door frames. It keeps cables neat and aesthetically pleasing. Surface-mounted door rings prevent cable breakage or intentional damage. Used for the protection of cables passing through gaps in door and door frame, including security access control technology, electric locks installed on doors, door sensors, alarm switches, and other applications, preventing damage. Easy to install and aesthetically pleasing. G240 Application: Protection against cable damage Material: Stainless steel Shell surface treatment: High-temperature spray painting Dimensions: 292*24*19 mm, Diameter: 10 mm Weight: 0.4 kg G240L Application: Protection against wire damage Material: Stainless steel Shell surface treatment: High-temperature spray painting Dimensions: 292*24*19 mm, Diameter: 10 mm Weight: 0.4 kg G241 Application: Protection against wire damage Material: Stainless steel Shell surface treatment: High-temperature spray painting Dimensions: 299*24*15 mm, Diameter: 10 mm Weight: 0.4 kg G215 Application: Preventing damage to electrical wires Standard Structure: Alloy material, thickened corrugated tubing Shell Surface Treatment: High temperature Material: Stainless steel Dimensions: 131*9 mm Weight: 0.11 kg G215L Application: Preventing damage to cables Standard Structure: Alloy material, thickened corrugated tubing Shell Surface Treatment: High temperature spray painting Material: Stainless steel Dimensions: 180*15 mm Weight: 0.15 kg