About this item REPLACEMENT DOOR KNOB – Upgrade old, unsightly or missing door knobs on your bi-fold doors with these classic bronze, large diameter door knobs. WIDE BASE – The wide base of this bi-fold door knob prevents crushing of a door panel when installed on hollow doors, and the large diameter allows for easy gripping. EASY INSTALLATION – Installation is quick and easy and everything needed is provided – 1 door knob per package with 2 fasteners. These door knobs are used by many wardrobe door manufacturers. DURABLE – Made with zinc diecast construction and a classic bronze finish, these door knobs are strong, durable and made to last. SIZING – This door knob has dimensions of 1.34"L x 1.34"W.