French door security kit: one keyed French door bar and two white vibration alarms on a white background
Security kit for double doors

French Door Security Kit

Lock the two handles together, then put an alarm on the glass.

$69.99One-time · free tracked shipping
Black Friday: 25% off. It comes off at checkout, no code. Ends Monday 11:59pm Eastern.
Free tracked shipping Free 30-day returns 1-year warranty
  • Works in or outThe bar locks handle to handle, so it does the same job on doors that open outward.
  • A real keyIt locks with a key and stays exactly where you set it until you unlock it.
  • One alarm per doorTwo alarms means each glass door gets its own 125 dB siren.
  • Nothing to drillNo screws in the frame, so it suits rentals and takes minutes to set up.
French Door Security Kit $69.99

Why a kit

French doors meet in the middle, so treat them as a pair.

There is no post between the two doors and no stud to bolt into. They often face the yard rather than the street, too.

The bar takes care of the handles. The alarms take care of the glass. Between them, both ways in have an answer.

The bar holds the handles. The alarms watch the glass.
1keyed bar
locks both inside handles
2alarms
125 dB, one per door
2sizes
choose by your handle
0holes
nothing drilled
French door bar from the kit, a keyed U-bracket that locks two handles together
Check your fit

Measure the handle, not the door.

The bracket has to pass over your handle, so the handle decides the size. Slim levers take Medium. Round knobs and thick pull handles take Large.

The bar needs a handle on both doors. If one door has no inside handle, it won't fit.

Lever handlesRound knobsIn or out
Setup

Ten minutes, no tools

1

Fit the bar

From inside, set the curved end around one handle with the rails behind both.

2

Lock it

Slide the locking body in against the other handle and turn the key.

3

Stick on the alarms

Clean the glass, peel the backing and press one alarm onto each door. Set the sensitivity dial.

Keep the key somewhere everyone at home can find it fast.
Who it suits

Back doors, patio doors and rentals with double doors

It suits any pair of doors with a handle on each side, whether they open in or out.

Cover the whole house

Now the windows.

The six-pack gives you one vibration alarm for each of six windows or doors, with the same peel-and-stick setup and no monthly fee.

See the six-pack
White TremShield vibration sensor alarm
Good to know

Questions, answered calmly

Slim lever handles and most other levers take Medium, with an opening of about 34 mm (1.3 in). Round knobs and thick pull handles take Large, about 43 mm (1.7 in).

Yes. The bar locks the two inside handles together, so it works the same whichever way the doors swing.

No. The bar sits on the handles and the alarms peel and stick.

One for each glass door. Each alarm covers the surface it is stuck to.

No. It has no Wi-Fi, no app and no monthly fee. It makes its noise right where it is.

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