Steel Automatic Overhead Door Lock 5 In. x 6-1/2 In. x 3-15/16 In. Yellow

Overhead door lock will allow overhead doors to be locked in virtually any up position Automatically locks doors in the closed position, and prevents from unexpectedly "slamming down" Spring-loaded locking latch is released by pulling rope & simply bolts to any overhead door Includes reversible "locking plates" that may be mounted anywhere along door track