Schlage F Door Knob, Design: Bell, Security Grade: Grade 2, Backset Type: Adjustable, Backset Size: 2-3/8, 2-3/4 in, Door Thickness: 1-3/8 to 1-3/4 in, Cylinder Type: 5-Pin, Keyway Type: C, Key Type: Alike, Latch Type: Universal, Faceplate Size: 1 x 2-1/4 in, Latch Housing Diameter: 7/8 in, Strike Type: Full Lip Radius Corner, Strike Size: 1-5/8 in W x 2-1/4 in H, Bolt Throw Size: 1/2 in, Door Handing: Universal, Satin Chrome, Commercial/Residential: Commercial, Residential