A 3/4″ piece of wood that is placed between cabinets or against the wall to fill in space. Fillers can be cut down to accommodate small gaps, typically against an uneven wall. A filler also gives space for the door to fully swing open without having the handle hit any walls. 

The filler has one fluted side to allow for decorative design opportunities. The filler can also be used in tandem with crown molding to create an elevated molding. Fillers come either 3″ or 6″ wide. They can come in 30″, 36″, 42″, and 96″ tall.