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Black no-drill window and door lock clamped onto a white sliding track with its thumb-turn knob tightened
Window & Door Locks

No-Drill Window Door Lock

No drill, no tools, no holes. A lock that clamps on and holds.

$7.99One-time · free tracked shipping
  • Clamps on, no drill or holesA hand-tightened screw grips the frame. No tools, no adhesive, nothing to patch when you take it off. Renter-friendly by design.
  • Set it shut, or cracked for airPosition it anywhere along the rail to lock the window closed, or to allow a fixed gap for ventilation without letting it open far enough to climb through.
  • Child-safe and anti-fallLimits how far a sliding window or door can open, which keeps a curious child from pushing it wide. An everyday safeguard in higher-floor apartments.
  • Stops the easy slide-openA panel that won't move past the clamp is a slower, louder target than one that glides open. Most opportunistic intruders move on.
Free tracked shipping 30-day returns Tested before shipping
No-Drill Window Door Lock $7.99

Why a clamp beats a flimsy latch

The window that won't slide is the window they skip

Most sliding windows and patio doors ship with a thin latch that a determined push, or a slim tool worked along the frame, can get past. A clamp lock changes the physics. It sits on the rail as a hard stop, so the panel simply runs out of room. There's nothing to pick and nothing to flip from outside.

It isn't a vault, and we won't pretend it is. It's a cheap, honest deterrent that makes a window slower and noisier to open, the two things an opportunistic burglar is trying to avoid. Put it where a window is easy to reach and easy to forget.

A window that won't budge is a window he leaves alone.
0
tools or drilling needed
2modes
locked shut or vented
1screw
hand-tightened clamp
60sec
to fit or remove
Who it's for

For renters and parents who want a window locked without a project

Renters who can't drill the frame and don't want to risk a deposit. Parents keeping a sliding window from opening wide enough for a small child. Anyone with a ground-floor or fire-escape window that's easy to reach from outside and easy to forget about.

At $7.99 it's the kind of fix you put on the three windows you actually worry about, then stop thinking about them.

RentersParentsApartmentsPatio doors
How to fit it

On in under a minute, by hand

1

Pick the spot

Slide the panel to where you want it to stop, fully shut or open a few inches for air, and set the clamp on the frame rail just past it.

2

Tighten by hand

Turn the screw until the clamp grips the frame firmly. No drill, no tools, no marks on the frame.

3

Test the slide

Try to push the window open. It should stop dead at the clamp. Nudge it tighter if it shifts.

4

Open or move it anytime

To open fully or relocate it, loosen the screw and lift it off. The frame is exactly as it was.

Works best on the flat frame rail of sliding windows and patio doors. Wipe the rail first so the clamp seats clean, and don't overtighten.
Where it fits

One quiet layer on the windows you forget about

On its own, a clamp lock buys time and makes a window a poor target, not a guarantee. It works best as one layer: alarms on the doors, locks on the easy windows, and nothing on display that says there's anything worth the trouble. Calm and unremarkable is the goal.

Layer your defense

Make the window stubborn, then make it loud

This lock makes a sliding window slow and stubborn to force. The TremShield Vibration Alarm makes it loud, firing 125dB the moment someone tries. Together they turn an easy entry point into one most intruders abandon.

See the alarm
Make the window stubborn, then make it loud
Good to know

Questions, answered calmly

Right. It clamps onto the frame with a hand-tightened screw, so there are no holes, no anchors, and no adhesive. It comes off just as easily, which is why renters like it.
Sliding windows and sliding patio or glass doors with a flat frame rail. It sits on the rail and stops the panel from sliding past it. It isn't made for hinged, casement, or double-hung windows.
Yes. Set the clamp a few inches back so the window opens to a fixed gap for ventilation but can't slide wide enough to climb through. It's a common way to childproof a higher-floor window.
It's a deterrent, not a vault. The clamp turns an easy, silent slide-open into a stubborn, noisy one, which is enough to send most opportunistic intruders elsewhere. For serious force, pair it with a security bar and an alarm.
No. It grips the frame with a clamp and leaves no holes, anchors, or adhesive residue. Wipe the rail before fitting, don't overtighten, and it lifts off clean whenever you want.

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