How to Install Blum Tandem Full Extension Drawer Slides

Remove the drawer. Set the Blum Tandem railing track on the inside of the drawer frame, in one of the bottom corners. Position the bottom of the track on the bottom of the drawer frame opening and the side of the track against the side of the drawer frame opening. Slide back the track so that the front of the track is 1/8 inch from the front surface of the drawer opening and the rear of the track is against the rear of the drawer frame. Set a block behind the track if necessary to fill space between the track and the rear of the drawer frame.

Drill the included attachment screws through each of the track bracket holes and tighten them completely. Repeat to add an additional track on the other bottom corner.

Hold the drawer up to the drawer frame opening. Notch the frame of the drawer with a saw if necessary to accommodate each of the drawer tracks if the drawer has boards that extend lower than the bottom board of the drawer.

Position one of the front locking devices on the underside of the drawer against the front so that it lines up with the location of the track. Drill the included attachment screws through the holes in the device and into the bottom board of the drawer. Test the positioning and fit of the devices on the track and make any necessary adjustments.

Shut the drawer and firmly press it back against the rear of the drawer, though it will not close all the way. Remove the drawer and note the areas on the rear of the drawer where the back of the track pushed into the rear board. Drill out these areas with a wood drill bit. Return the drawer to the track and retest operation, finishing when the door locks into place smoothly and is flush with the front of the frame.