ZOIC Large Size (16.92X14.17 Inches) 2 Way Lockable Locking Pet Dog Doggie Cat Safe Security Brushy Flap Door Gate For Wall or Wooden Door 2 way locking system (locked and unlocked) Suitable for Brick Walls, Wooden Doors and UPVC/PVC/ Door Suitable for large and extra large dogs,such as Labradors, German Shepherds, Dobermanand, Rottweiler,Husky and other large dogs, cats or pets(Please measure your pet first before purchasing) The thickness of the pet door is 1.96 inches