We offer the two main ABT Gibbons Lock Centre Case Gear Boxes. The ABT Gibbons Locks were used on many doors including UPVC and aluminium doors. The ABT Gibbons replacement lock comes in two variants, one with a latch snib and short face plate, the other comes without the latch snib and no face plate. The ABT Gibbons Locks come with a 32mm backset and 88mm / 48mm PZ centre. The top and bottom sliders can connect to remote dead bolts if required. For more help identifying your replacement ABT Gibbons UPVC / Aluminium Door Lock Centre case, please use our UPVC Door Lock Identification guide.