Defender Security Patio & Closet Door Lock


Designed for sliding glass doors, this is great for making sure your sliding mirrored closet doors stay shut while driving!  Watch our video about it!

NOTE: in order for this to work the way we’ve used it, be sure that you have about 1/2″ of clearance between your doors when they slide past one another… otherwise, you can’t mount this to the rear door without blocking the front one from sliding past.

Buy product

SKU: B000NCWR06 Category:


Clear Lucite, 2-piece hinged assembly with spring-loaded plunger lock, clear adhesive handing securely blocks door in closed or ventilating position. No tools needed to install. Inconspicuous when installed. Mounts to glass surface of stationary glass panel.


  • Used for safely ventilating horizontal sliding patio doors and windows
  • 1-1/4 in. X 3-1/16 in
  • Clear Lucite leafs
  • Clear Lucite construction