Defender Security U 9517 Door Cover Plate, Steel, Chrome, For: 2-1/8 in Bore Locks

Covers marred doors and allow conversion of 2-3/8 to 2-3/4 in backset or 2-3/4 to 2-3/8 in. Inside diameter of 2-1/8 in, outside diameter of 3-1/2 in. Includes 2 plated covers.