Lockey has several different types of keyless deadbolts: The Adjustable Face-Plate Deadbolt for M210, 2210, 3210 (with a single or double-sided keypad) has a flat plate with 2 screw holes. It comes with 2 wood screws which are used on the edge of the door to hold the deadbolt in place. It has an adjustable back set of either 2-3/8" or 2-3/4". Use with Lockey M210, 2210, and 3210 keyless locks. The Adjustable Face-Plate Deadbolt for E910 (with a single or double-sided keypad) is the same as the one above, except it is designed for the Lockey E-Digital locks. Use with Lockey E-Digital E910 keyless locks. The Adjustable Drive-In Deadbolt for M210, 2210, 3210 (with a single or double-sided keypad) has a small, thin ring instead of a face plate and no screws. This type is used on steel doors which don't have a recessed area for the face plate. It has an adjustable back set of either 2-3/8" or 2-3/4". Use with Lockey M210, 2210, and 3210 keyless locks. The 1-1/8" Backset Mortised Deadbolt (Adams Rite) for 2900 (with a single or double-sided keypad) has a large block that fits into the edge of a narrow stile doors or gates. This is NOT an Adams-Rite style deadbolt...it is a replacement for an Adams-Rite style deadbolt. It has an 1-1/8" backset. Use with Lockey 2900 Series keyless locks.
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