Pre-formed Inside Corner 6 1/2" P x 4 1/2" W x 4 3/4" H (Leg 17 3/8" x 17 3/8")• 52R pre-made crown moulding corner is normally used in conjunction with a decorative middle 5051 moulding and plain straight moulding 5050• Made from polyurethane, this item has beautiful sharp details throughout.• Comes with two coats of white primer and can be installed as is or painted or gel-stained on the job site. • Install with adhesive and finishing nails. (Nails are to hold the piece in place whjile the adhesive drys.