They retract with a turn of the knob to open.
French door top and bottom bolt.
The problem with manual bolts is that a tall intruder can break panes to reach each bolt.
French doors use a barrel bolt as a top latch to secure one of the doors.
Traditionally these brass or iron bolts push up from the top of the door and down from the bottom into guides on the door jamb and threshold.
Art deco top and bottom bolts for french doors 88 504 88 525.
Four vertical one inch surface deadbolts each with a key secure one or both doors.
The barrel bolt is.
Door hardware locks.
Evoking period french doors these have face mounted bars that run top to bottom and slot into sockets in the casing and threshold.
French price and other details may vary based on size and color national hardware n197 988 v1922 flush bolt in solid brass 4 inch.
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The door with the barrel bolt typically stays put while the other doors is used for traffic.