About This EASY INSTALLATION: No tools required. Just easily prep under the knob and adjust the door bar as needed DUAL FUNCTION: Top piece is easily removed for sliding door security bar, making this door security devices an all-in-one solution for enhanced protection 300 POUNDS OF FORCE: Designed to prevent forced entry, will enhance your security at home, in hotels, or for your business. Lifetime Warranty included ADJUSTABLE: The sliding door lock can be adjusted in 40 different positions between 25 in (63.5 cm) to 41.5 in (105.4 cm) WORKS ON ALL SURFACES: Angled & squared rubber bottom assures full contact and strong grip on all types of floors without scratching them Overview Brand : Guard Dog Security Mounting Type : Door Mount Material : Rubber Color : White Style : Adjustable Product Dimensions : 1"L x 1"W x 1"Th Finish Type : rubber Number of Pieces : 1 Global Trade Identification Number : 00859477007827 Manufacturer : Guard Dog Security