Shims are used in window and door construction, as well as in interior and dry fit-out. They serve for compensating uneven surfaces and for quick alignment. The ratchet prevents the shim from slipping away from the screw. Thanks to this mounting aid, the shim can be easily positioned.
Compensation/shimming of profiles (e.g., FrameTec Select 2.0, MasterTrack® FT) in case of uneven walls