Aluminium Alloy Sliding Window Restrictor Lock with 2 Keys
On a ground-floor window, a full-width opening is more than most days need. This aluminium alloy restrictor lock works on sliding windows and doors, opens with one of the two keys supplied, and suits homes, hotels, hospitals and banks. For anyone who wants the window held at a smaller gap.
A keyed stop for sliding windows
✅ Released only by key The cylinder is a keyed box lock, so the window is opened with one of the two keys in the pack.
✅ Compact on a narrow frame The body measures 40 x 32 x 23 mm, small enough to sit on a window frame without crowding the glass.
✅ Two keys in the parcel A second key means the person who opens the window and whoever else needs access each keep their own.
✅ Finish for daily handling Aluminium alloy body with a plated zinc alloy surface and galvanised treatment, given as resistant to fading paint.
✅ Built for busy buildings Hotels, hospitals, banks and offices are named as settings, where a mechanical lock needs no wiring or battery.
The places it is meant for are the ones where a window is opened often but not by everyone: a hotel room, a hospital ward, a bank counter window, a school office. In each case the key stays with whoever is responsible, and the window can be held at a smaller opening for the rest of the day.
The lock is a single black unit, and the parcel holds one restrictor and two keys in kraft paper packaging. No screws or other fixings are named for the pack, so check what your frame needs before ordering and have it ready on the day.
The difference from an ordinary window lock is the job it does. A restrictor holds the opening at a limited gap; it is not a burglar-proof latch and it does not replace a full window lock, and no security rating is stated for it.
Sizing is the one thing to check first. The body is 40 x 32 x 23 mm and the key is 4.5 cm long, so the lock takes a small patch of frame; measure the frame depth and the travel of the sliding sash before choosing a position.
Technical details
- Material: aluminium alloy body, plated zinc alloy surface
- Finish: galvanised, black
- Lock type: keyed cylinder, box lock
- Keys: 2 supplied
- Body size: 40 x 32 x 23 mm
- Key length: 4.5 cm
- Weight: 74 g
- Fixing: method not specified; no screws named in the pack
- Pack contents: 1 restrictor lock and 2 keys, kraft paper packaging
- Certification: none stated
Measure the frame and the sash travel, then order the keyed restrictor and keep the spare key safe.
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