Steel boxes that weld into a metal gate or door, multiple models are available. Supplied in a zinc plated finish LOCKSET Suitable to house a cylindrical or tubular lockset Will fit most brands of locksets and leversets Available in backsets of 60mm and 70mm Dimensions 90mm x 75mm x 44mm with a hole diameter of 55mm 3570 SERIES BOXES Made to suit a standard backset mortice lock Lockwood Synergy 3570 series Cylinder hole only Dimensions 176mm x 95mm x 30mm