Simplex 900 SeriesDeadbolt models must be manually relocked.Construction: All metal cast front housing, force-resistant, clutch-protected thumbturn, metal exterior trim plateNumeric Keypad: Vandal resistant, solid metal pushbuttonsHanding: Field reversible latch; invert the lock for right-hand doors; roman numerals are easily read in either orientationBackset: 2 9?16" (65 mm) for outswing doors, 2?" (64 mm) for inswing doorsLatch: 1" (25 mm) deadbolt; ?" deadlocking spring latchStrike: Includes strike plate for outswing doors, cast box strike for inswing doors; metal door frames require the optional surface mortise box strike or use of an adapter kitDurability: Weather resistant