The Gatemaster DGLW series locks, making security simple! These locks are simple to install and have features such as no electricity required, fully mechanical and will likely outlast the wood used to make the gate (If well maintained!) The locks require 3 holes and only a few wood screws to install! They have been used occasionally on vinyl gates too, a versatile lock in an un assuming package! The codes can be changed and the changing kit is supplied with all of the DGLW (double sided) and DGLSWL (single sided) locks.