The CLK-YL-AYRDT226-TS-GSK gasket is used with a CLK-YL-YRD226-CR2 deadbolt lock to convert a 1.38 inch (35 mm) door to a proper thickness for lock installation. The gasket fits snugly between the lock and the door to prevent slippage over time and also provides protection for both the lock and the door, such as from weather or hardware scratches. The gasket is available in a black finish only.