Double Door Lock – Solid Aluminum Door Security Latch
- Regular price
- $44.99
- Sale price
- $44.99
- Regular price
-
Protect your home with a solid aluminum door latch. Clamps over door knobs, adjusts to fit, and adds time to respond in forced entry attempts.
2-Year Warranty
30-Day Risk-Free Trial
US-Based Support
Free Shipping
Everything You Get
Compare the real cost of security:
Locksmith call-out: $75–$200 · Smart lock system: $150+ · Deadbolt replacement: $50+ labor
DDSECURITYLOK: One-time purchase. No tools, no locksmith, no recurring fees.
How It Works — 3 Simple Steps
No tools required. No modifications to your door. Just slide, clamp, and lock.
OPEN
Extend the Clamp
Pull the adjustable arms apart to match the width of your door knobs. The 1/2" aluminum body flexes without bending.
CLAMP
Secure Over Both Knobs
Place the latch over both door knobs simultaneously. The clamp grips tightly around each knob, preventing either door from opening.
LOCK
Tighten & Walk Away
Tighten the adjustment mechanism until snug. Your double doors are now reinforced against forced entry. Remove in seconds when you need to.
Reinforce Your Weakest Entry Point
Double doors and French doors are the #1 target for break-ins because standard locks leave them vulnerable. The DDSECURITYLOK bridges both knobs with 1/2" solid aluminum, creating a physical barrier that resists kicking, prying, and brute force.
While a standard deadbolt has a single point of failure, this latch distributes force across both doors simultaneously — making forced entry exponentially harder.
Fits Most Double Doors & Knob Styles
Three pin slot positions (6⅜", 6⅞", and 7⁵⁄₁₆" center-to-center) let you match your exact knob spacing. Measure the distance between the centers of your two door knobs before ordering to confirm fit.
Compatible with:
✓ French doors (most popular use)
✓ Double entry doors
✓ Double closet & pantry doors
✓ Round knobs & lever handles
✓ Pet containment & child safety doors
Pro tip: Make sure your door knobs are firmly tightened before installing. Loose knobs may not hold the clamp securely.
Who Uses DDSECURITYLOK?
Homeowners
Renters
Parents
Pet Owners
Small Business Owners
Built From Solid Aluminum — Not Plastic
Most door security devices use plastic or thin stamped metal that cracks under pressure. The DDSECURITYLOK is forged from 1/2"-thick unibody aluminum — the same material used in aircraft construction.
No screws holding it together. No joints to fail. Just one solid piece of metal standing between your family and a forced entry.
Your First Line of Defense
An intruder can kick through a standard interior lock in under 5 seconds. The DDSECURITYLOK clamps across both doors, distributing force across the entire latch instead of a single lock mechanism.
This buys you the most valuable thing in an emergency: time — time to call 911, time to get your family to safety, time to respond on your own terms.
Why Choose DDSECURITYLOK
1/2" Unibody Aluminum
3-Position Adjustable Fit
Zero Tools Required
2-Year Warranty
We Stand Behind Every Lock
Your satisfaction is non-negotiable. If the DDSECURITYLOK doesn't give you the peace of mind you deserve, return it within 30 days for a full refund — we'll even cover the return shipping. Every unit is backed by our 2-Year Full Replacement Warranty: if anything goes wrong, we replace it free of charge. Real US-based customer support, real humans, real answers within 24 hours.
Frequently Asked Questions
The DDSECURITYLOK fits most double doors including French doors, double entry doors, double closet doors, and cabinet doors with round knobs or lever handles. It has three pin slot positions: 6⅜", 6⅞", and 7⁵⁄₁₆" (measured center-to-center between knobs). Grab a tape measure and check the distance between the centers of your two door knobs before ordering. If it falls within these ranges, you're good to go.
The 1/2"-thick unibody aluminum construction is significantly stronger than plastic or thin stamped metal alternatives. Aluminum has a high strength-to-weight ratio and doesn't crack or shatter under pressure the way plastic does. The single-piece design means there are no screws or joints that could fail under force.
No tools required. Simply extend the adjustable arms, place over both door knobs, and tighten. Installation takes about 5 seconds and removal is just as fast. No drilling, no screws, no modifications to your doors.
The DDSECURITYLOK clamps around both knobs and relies on them being firmly attached to the door. If your knobs are loose or wobbly, the pressure from the latch could loosen them further over time. Before installing, check that both door knobs are tightened securely — usually just a matter of tightening the set screw on the knob base. This takes 30 seconds with a screwdriver and ensures a solid, secure fit.
The DDSECURITYLOK is designed to clamp securely without damaging your hardware. The contact surfaces grip the knobs firmly without scratching. If you have decorative or antique hardware, you can place a small cloth between the clamp and knob for extra protection.
Yes — French doors are one of the most common use cases. The adjustable mechanism accommodates the typical spacing between French door handles. It creates a rigid bridge between both doors, preventing either from opening independently.
Absolutely — and this is one of the most popular use cases. Parents use it to secure pantry doors, closet doors, and off-limits rooms from children. Pet owners love it for keeping dogs from pushing through French doors or escaping to the patio. The solid aluminum construction means even large dogs and persistent toddlers can't break through, and it installs/removes in seconds for adult access.
By design. Keyed double-door locks cost more and add complexity — keys to lose, cylinders to jam, and slower deployment in an emergency. The DDSECURITYLOK is built for speed: arm it in 3 seconds, disarm it in 2. No fumbling for keys when you need to get through the door fast. For interior use (the primary use case), keyless is an advantage — not a limitation.
A deadbolt secures one door to the frame at a single point. The DDSECURITYLOK bridges both doors together, creating a physical barrier that distributes force across the entire latch. It works alongside your existing locks as a second layer of security — not a replacement.
The latch has three pre-set pin slots at 6⅜", 6⅞", and 7⁵⁄₁₆" center-to-center. Slide the arms to match your knob spacing, drop the locking pin through the corresponding hole, and the button catches to secure it. Make sure the pin clicks fully through the hole until the button catches — if it feels loose, try the next pin slot for a tighter fit. The system is intuitive enough to use in the dark or in an emergency.
We offer a 30-day money-back guarantee with free return shipping. If the DDSECURITYLOK doesn't fit your specific door configuration, contact us at support@securitymaninc.com for a full refund. No questions asked.
Buying direct from SecurityMan gets you the full 2-Year Warranty honored directly by our team (no Amazon middleman), free return shipping on our 30-day guarantee, priority US-based customer support with 24-hour response times, and access to exclusive bundles. Plus, you're supporting the company that designs and stands behind the product.