This LEFT-HANDED lockset can be used on entry doors of 1-3/8 inch to 1-3/4 inch thick to match interior vintage style hardware Features a 2-1/2 inch backset, 9/16 inch latch projection, 1 inch deadbolt projection, 2-1/4 inch diameter knobs and includes a night latch for added security Steel reinforced knobs include a wrought solid brass finish, steel strike and Zamak case Plated and polished brass finish Please refer to the line art drawing for dimensions and compare with your needs before purchasing (Not Universal)