The term dust board refers to a thin board or panel that is placed on the bottom of a piece of furniture, typically inside a cabinet or drawer. It is used to prevent dust and debris from entering the enclosed space and settling on the items stored within. Dust boards are commonly found in antique furniture or high-quality pieces, where the focus is on maintaining cleanliness and protecting the contents. Also called dust bottom, dust proofing. Thin wood panel used between drawers to exclude dust.