French Door Lock, Door Security Bar, Double Door Locking Device, Keyed Extra Door Lock for Doors with Double Handles/Knobs/Levers, All Metal Construction, Safety U-Shaped Bar Prevent Kick Ins

• Applicable to both outswing & inswing door handle with lock.

• All-Metal Construction: Double door lock, Made of die-cast aluminum alloy, offering superior durability and load-bearing capacity compared to traditional plastic version. It effectively prevents door handle manipulation (to stop unauthorized entry/exit) and resists forced kicks from the outside.

• French doors : Features an adjustable sliding lock bar to fit door handles at different spacings. Compatible with standard French double-door with round door knobs, straight lever door handles. Note: For inward-curving door handles, please check product images for compatibility reference.

• French door locks for double doors : The 1-1/2" opening accommodates the neck of most double-door knobs/levers for secure locking. Also compatible with tubular handles under 1-1/2" diameter, including: barn doors, gate, double-door refrigerators.

Applicable to door handles with common 2-3/4"(70mm) or 2-3/8"(60mm) latch backset. Compatible with a neck edge distance of 6" (150mm) to 7-3/4" (197mm), measured from the door handle neck edge. Refer to the product image for dimensional markings.