Inside Corner—Two Drawers. Where cabinets meet at an inside corner, a 2 1/2-inch filler strip on each side prevents interference from drawers and pulls. Door at End of Run. Where cabinets terminate at a wall, a filler strip can also prevent interference from the lockset of an adjacent door.
Built-up door or window trim can also cause problems. The cabinet door can’t be opened because it’s obstructed by the trim
End Wall. Scribe filler strips to close gaps where cabinets meet irregular or out-of-plumb walls. End Panel. At the end of a cabinet run against an out-of-plumb wall, scribe an extended finish end panel to match the wall. If the cabinet end is a standard depth, glue and scribe an extension made from a filler strip; as a last resort, cover any gaps with molding.