Schlage SC2-3125-605 Door Knocker, Brass, Brass, 3-15/16 in Mounting Hole

For apartment doors up to 1-3/4 in. Mounting hole center-to-center of 3-15/16 in. Size of 5-15/16 in L x 3 in W x 1-1/16 in projection. Includes mounting hardware.