Product Description: Exit Only Door Knob from the Orbit CollectionA blank plate on the outside. While the knob on the inside is always unlocked.Exit LockLatch: 1" x 2 1/4" Square corner faceplate, 7/8" housing diameter, 1/2" throw Strike: 1 1/8" x 2 3/4", Square corner, T-strike, box. Door Range: 1 3/8" - 1 7/8"