Cover retaining spring for securing the clip-locking function of the cable duct cover without rotary latch closures. When securing, it is important to maintain a minimum distance of 50 mm from the beginning and end of the cover. Due to external influences, such as wind loads, use in outdoor areas is only possible with additional securing methods like self-tapping screws or steel bands. For cable duct covers RD ... for angle-adjustable fitting covers RBAVD ... dimensions approximately length: 40 mm, material spring stainless steel, material number 1.4310 RDHF 9 E2.