Stainless steel lock blocker for mounting over the cylinder lock on the door. The movable part slides over the keyhole and is locked with a booking cylinder. Suitable for all door types. Use the lock blocker to ensure that only the person who has booked the laundry slot has access to the laundry room. By using their own booking cylinder, the door lock is blocked. This is a simple and smart solution that ensures only the person with a valid booking can open the laundry room door during their reserved time.