Ground-floor windows are the entry a locked door redirects people to · review
The five-unit box of BASI's keyless window bolt, for a house with more accessible windows than a three-pack covers. Same push-button mechanism and same 50 mm (1.97 in) screws.
The conclusion The same lock, in the quantity a whole house needs. Count the reachable windows and buy that number.
This is the five-unit box of the keyless BASI bolt reviewed above. Nothing about the lock differs; what differs is that most houses need five rather than three.
Walk outside and look for every window somebody could reach standing on the ground. Then look again for the ones people forget: the window above a flat roof, the one over the trash enclosure, the one beside the garage that can be climbed in ten seconds. Those are reachable too, and they are where a first-floor window becomes a ground-floor window.
That count is what to buy.
A house with three different window locks is a house where two of them are open, because nobody remembers which does what. Fitting the same unit throughout means one habit for everybody who lives there, and the habit is the thing that actually protects the window.
Released instantly from inside, which is right for escape and wrong where a child might open it or a hand could reach through broken glass. Judge that per window rather than per house, and use a keyed lock where the answer differs.
A detached or semi-detached house doing the whole job at once.
Not found on the American Amazon store, where the buy link falls back to a local search rather than to a page that does not exist.
Prices and availability are what Keepa reported on the date this page was updated; both move.
| Contents | 5 window security bolts |
|---|---|
| Operation | Push button to lock, quick release — no key |
| Fixings | 4 × M5 × 50 mm (0.20 × 1.97 in) self-tapping screws per unit |
| Application | Single-leaf windows and French windows |
| Color | White |
| Amazon reference | B09BB6994S |
| EAN | 4026434436556 |
Count the windows somebody could reach from the ground without a ladder, including any above a flat roof, a trash enclosure or a garage. That number is what to buy. Most terraced houses need three; most detached houses need five or more.
Every reachable one. Windows on the second floor with nothing to climb are not where anybody starts, and money spent there is money not spent on the ground floor or on the flat-roof window above the extension — which is the one people forget.
It helps. Everybody in the house learns one mechanism, and a lock that everyone understands is a lock that everyone uses. Mixed hardware across a house is one of the quiet reasons window locks get left open.
7.5/ 10
The same lock, in the quantity a whole house needs. Count the reachable windows and buy that number.
A reference exists on these Amazon stores: France, Germany. Listed is not the same as in stock — availability changes daily.
Details checked on September 2, 2026.
A house with five or more reachable windows — usually a front, a back and a side.
Amazon reports what buyers took in the month before this page was last checked: at least 50.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Hinge-side lock · bolt rated to one metric ton of pressure · ABUS level 10 · 123 × 42 × 86 mm (4.84 × 1.65 × 3.39 in)
A hinge-side security bolt for inward-opening windows — the side almost nobody reinforces. ABUS states the bolt protects up to one metric ton of pressure and rates it at security level 10 on its own scale.
Best for: The half of the window that every other lock in this hub ignores.
≈ $68
Bolt lock, inward-opening windows · 4-pin cylinder · keyed alike · ABUS level 5 · key to open only
A bolt-action window lock for inward-opening windows and French windows. ABUS states a four-pin cylinder, keyed-alike operation, and a mechanism that locks by pushing — the key is needed only to open it.
Best for: Ground-floor windows that get locked every night, where hunting for a key each time would end the habit.
≈ $60
Three window locks · push-button locking, no key · M5×50 self-tapping screws supplied · white
Three window security bolts operated by push button rather than by key, which BASI states lock by hand and release quickly. Each comes with four M5 × 50 mm (0.20 × 1.97 in) self-tapping screws.
Best for: Doing every ground-floor window at once, without a key for each.
