Double Door Locking Device for French Doors - Security Barricade

In this review of the Double Door Locking Device for French doors, the bottom line is simple: this is a heavy-duty, flexible extra lock for households that want stronger protection at a double-door entrance. The unit's all-metal die-cast aluminum construction is the single biggest reason to consider it, as it provides noticeably greater rigidity and resistance to forced kicks compared with plastic alternatives. Installation is straightforward and the device works on both outswing and inswing French double doors, making it a solid choice for interior rooms, patios, and secondary exterior doors where added deterrence matters.

Key Features

• All-Metal Construction: Die-cast aluminum alloy offers enhanced durability and load-bearing capacity so the device resists forced kicks better than plastic versions.
• Dual Locking Mechanisms: A keyed full lock delivers maximum security while a quick slide lock provides convenient, keyless locking for everyday use.
• Adjustable Design: The adjustable sliding lock bar fits a range of handle spacings so it works with most standard French double-door knob and lever layouts.
• U-Bracket Fit: The 1-1/2' opening accepts the neck of many knobs and tubular handles under 1-1/2' diameter for a snug, reliable fit.
• Storage Pouch Included: A waterproof pouch keeps the device organized and lets you hang it on a handle or door stop for quick access when needed.

Who It's For

This device is aimed at homeowners and renters who need an easy-to-install supplemental lock for French double doors, interior connections between rooms, or secondary exterior doors where a compact barricade adds security. It particularly suits people who prefer a metal construction over plastic and want the option of a keyed lock for overnight or away-from-home security.

Those who should look elsewhere include owners of doors with deeply inward-curving handles not shown in the product images, or anyone who needs an electronic or integrated deadbolt solution; this is a mechanical, add-on barricade rather than a built-in lock replacement.

Pros & Cons

Pros

• Sturdy die-cast aluminum construction gives better resistance to force than plastic models.
• Two locking modes let you choose between convenience and maximum security.
• Adjustable sliding bar and 1-1/2' U-bracket accommodate most knobs and levers for broad compatibility.

Cons

• Some customers report mixed lockability due to occasional locking mechanism failures, so longevity of the lock parts can vary.
• Not compatible with all inward-curving handle designs, so verify fit against images before purchase.

Specifications

Our Verdict

The Double Door Locking Device is a practical, value-minded barricade for anyone needing stronger protection on French double doors. Its all-metal construction, adjustable bar, and dual locking options deliver real improvements over plastic add-on locks, making it a good buy for most homes-provided you confirm handle compatibility and accept that some users have seen occasional locking issues.

Frequently Asked Questions

Will this fit my double-door knobs?
It fits standard round knobs and straight levers and accepts handles with necks under 1-1/2' diameter; check images for inward-curving handle compatibility.

Can I use the device on inswing doors?
Yes, the design is applicable to both outswing and inswing French double doors.

Is a key required every time?
No, use the quick slide lock for keyless convenience or the keyed full lock when maximum security is needed.