2524568 Door Lock Installation Guide Instructions 21/8" Hole Saw Door Threes Wetback Stop This door lock installation guide requires proper setup for door thickness and backseat prior to use. 1. Adjust for Proper Door Thickness: Common doors are dither or thick. Position the two DOOR THICKNESS SPACERS on the glued In the Gamow position (Fig. 1) for thick door or In the ‘wide position (Fig.
