Coming fitted with two screws, this XL gate lock latch tail piece is designed for use with the BL3100 & BL3400 metal gate locks where the gate thickness exceeds 60mm.
Two variants are available: S311A for conventional locks and S311B for ECP models. If you’re not sure what model you have, the easiest way to determine is with the presence of an asterisk button. This is only found on the ECP models and facilitates the on the gate code change function.
ECP S311B fitting instructions: