Installing the Latch » Mark a central point on the ‘center line of latch’ across the thickness of the ! Door Thickness door, {Figure 2} At the marked position drill 2 25mm diameter hole x 80mm deep Central point an Inset Latch into the hale and draw around the face plate. Cent line of Remove latch and cut a 3mm rebate to allow the Latch face plate to sit = flush in the door. Secure latch with wood fixing screws ensuring the positioning is square.