Highcool Unibody Aluminum French Door Childproof Lock — Double-Door Security for Straight Knobs (Neck ≤32mm, Handles ≤185mm)

Compatibility: Fits most standard straight door knobs; not compatible with curved door knobs. Before purchase measure the door handle neck width — it should not exceed 32mm — and the distance between the two door handles must not exceed 185mm. Construction: Unibody design machined from a single piece of 1/2" thick aluminum for robust resistance against forced entry.

Fit & orientation: Designed for double doors and French doors with a reversible installation to suit either door orientation. The lock offers three pin positions to match common double-door handle spacings: (6 3/8"), (6 7/8"), (7 5/16"). Operation: Childproof, quick to engage and disengage — engineered for fast use so it can be activated or deactivated in moments.

If the main lock is breached, this dual door lock provides an additional layer of security, giving homeowners vital extra time to respond and improving protection for property and household members.