Era Patio Door Lock - WhiteEra 100 12 patio door push lock in white Push the spring bolt to lock, key required to unlock Hardened steel pin in bolt resists hacksawing Fits metal, wood, and uPVC patio doors (inside or outside sliding track) All fixing screws concealed when locked Supplied with 2 keys, ferrule, and fixing screws Fit at top and bottom of door for extra security Era 100 12 Patio Door Push Lock with Hardened Steel Bolt for Sliding Metal, Wood, and uPVC Patio Doors