Cut and route four decorative face panels for the exterior of the sliding shelves using a table router. Cut bevels/tapers along all four edges in proportions to match the rest of the kitchen cabinetry.

Cut and route groove in the four frame rails that will hold the panels in mortise and tenon joints.

Insert the decorative panel into the grooves in the frame/rails. Do not add glue to the beveled panel; it must be free to expand and contract with changes in temperature and humidity.

Use glue on the mortise and tenon joints at the corners of the frames. Clamp the assembled decorative panel and frames while the unit dries.

Repeat the steps above for each of the remaining decorative panels.

Nail the finished panels to the fronts of each slide-out shelving unit using a pneumatic nail gun.