An unbolted safe is a strongbox with a handle for carrying it away · review
One of only three safes on this shelf that publish an internal size as well as an external one — and it cannot agree with itself about the capacity.
The conclusion One of three safes on this shelf that tell you how big the inside is — 6.29 by 8.9 by 5.12 inches — with dual steel bolts, a keypad and two override keys, pre-drilled holes and mounting bolts in the box, for thirty dollars. That is the right set of facts for a small safe. It then contradicts itself on capacity, 0.23 cubic feet in the title against 0.2 in the bullets, and the internal dimensions make the true figure about 0.166.
No wall thickness. No grade.
Nought point two three, nought point two, and the arithmetic.
The title says 0.23 cubic feet. The second bullet says 0.2.
The internal dimensions — 6.29 by 8.9 by 5.12 inches — come to about 0.166.
This shelf’s buying tip asks you to subtract the door and the walls before believing a capacity. Here the page gives you everything you need to do it, and then publishes two figures that are neither.
Which eight of eleven safes here do not.
Six point two nine by eight point nine by five point one two inches is what fits.
Five inches of depth is shallow: a passport folder lies flat, a camera body does not stand up.
Never left open. Possibly locked on the keys.
A magnetic catch that re-locks on closing removes the commonest way a safe fails — somebody leaves it open.
It also means the two emergency keys must live somewhere else. Set the code before you need it, and keep one key out of the house.
Pre-drilled holes, bolts supplied.
At least four of the seventeen safes here publish both. This shelf’s introduction calls bolting down the most consequential fact about a home safe.
The fixings supplied with a small safe are masonry anchors. Into a stud wall or chipboard they pull out with the safe attached.
On sale at around $30 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
Weighed against the median of its own range on this site — not against the security market at large.
| Capacity | Published twice and the two do not agree: 0.23 cubic feet in the title and 0.2 cubic feet in the second bullet. A 13 per cent difference on the figure the shelf is organized by |
|---|---|
| Dimensions | External 9.05 × 6.69 × 6.69 in, internal 6.29 × 8.9 × 5.12 in — both stated. It is one of three safes in this group to publish an internal size, which is what this shelf's buying tip asks for |
| Body | Reinforced solid steel wall construction with a corrosion and stain-resistant powder coat, stated. No thickness |
| Lock | A digital keypad, programmable, with two emergency keys supplied. A magnetic lock is stated to re-lock automatically |
| Bolts | Dual security steel door locking bolts — stated |
| Anchoring | Pre-drilled holes for wall or floor mounting, with mounting bolts included — stated. One of four safes in this group to publish both the holes and the fixings |
| Grade | Not published |
| Contents | Two emergency keys and mounting bolts, stated |
| Stated for | Personal valuables |
| Amazon reference | B078MYJYD5 |
| EAN | 0703327435042 |
The page says both — 0.23 in the title, 0.2 in the second bullet — and the internal dimensions settle it: 6.29 by 8.9 by 5.12 inches is about 0.166 cubic feet, which is lower than either claim. That is exactly the arithmetic this shelf's buying tip asks you to do: subtract the door and the walls before believing a capacity. The external 9.05 by 6.69 by 6.69 inches comes to about 0.235 cubic feet, so the title figure is the outside and the useful figure is a third smaller.
It re-locks the door when it closes, so the safe is never left open by accident — which is the commonest way a safe fails, and a real advantage in a household where several people use it. The risk is the obvious one: a door that locks itself can lock itself on the keys, and this safe has a keypad with two emergency keys, so those keys must live somewhere other than inside it. Set the code before you need it and keep one key off the premises.
They are the right kind and the wall matters more. The listing supplies mounting bolts and the safe has pre-drilled holes in the back and the base, which puts it among the four safes in this group that publish both. This shelf's introduction says bolting down is the most consequential fact about a home safe, and the fixings supplied with a small safe are sized for masonry — into a stud wall or chipboard they will pull out with the safe still attached. Bolt it to a concrete floor or a masonry wall, or do not bolt it at all.
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
| Model | Price | Capacity | Dimensions | Body | Lock |
|---|---|---|---|---|---|
| Yuanshikj YSKJ-SAFE-17K-SFB small steel safe, 0.23 cu ft | $30 | Published twice and the two do not agree: 0.23 cubic feet in the title and 0.2 cubic feet in the second bullet. A 13 per cent difference on the figure the shelf is organized by | External 9.05 × 6.69 × 6.69 in, internal 6.29 × 8.9 × 5.12 in — both stated. It is one of three safes in this group to publish an internal size, which is what this shelf's buying tip asks for | Reinforced solid steel wall construction with a corrosion and stain-resistant powder coat, stated. No thickness | A digital keypad, programmable, with two emergency keys supplied. A magnetic lock is stated to re-lock automatically |
| CDC DIGI 1710-1 digital electronic money safe, 0.23 cu ft | $30 | 0.23 cubic feet — stated | 9.06 in wide, 6.69 in deep, 6.69 in high — stated as the external size. No internal dimensions | SPCC steel, stated sturdy and thickened. No thickness figure, despite the word | A keypad with a covered override key, stated. The listing gives a four-step setup: remove the override key cover, open with the key, fit the batteries, set the password |
| MAESTON 17E electronic coin bank safe for children | $30 | Not published | Not published, external or internal | Not described — no material and no thickness | An electronic password keypad — stated |
| Honeywell 6104 small fire-resistant lock box, 0.17 cu ft | $31 | 0.17 cubic feet — stated. The smallest in this group | Not published, external or internal | Double steel wall construction with fire-resistant insulation between, stated. It is the only small safe in this group built that way; the rest are single-skin steel | A dual locking system with a secure key lock, with two entry keys supplied |
Details checked on October 8, 2026.
A drawer or a wardrobe shelf, where the internal size can be checked against what has to go in it
Amazon reports what buyers took in the month before this page was last checked: at least 3,000.
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.
Book-shaped diversion safe · 3-digit combination · fabric cover and spine · for a bookshelf
A diversion safe shaped like a book, with a fabric cover and spine and a three-digit combination lock. Amazon Basics states it is meant to sit between other books on a shelf.
Best for: Concealing something small in plain sight, in a house where nobody is looking hard.
14 L · digital keypad · 2 override keys · concealed anti-pry hinges · adjustable shelf · 4 × AA
A 14-liter steel safe with a digital keypad, two emergency override keys kept separately, concealed hinges described as anti-pry, and a removable adjustable shelf. It runs on four AA cells.
Best for: The default household safe: big enough for documents, small enough to bolt into a wardrobe floor.
≈ $58
200 × 310 × 200 mm (7.87 × 12.2 × 7.87 in) · self-programmable electronic lock · single-wall body · basic valuables protection
BURG-WÄCHTER describes the Favor S3 E as basic valuables protection: a single-wall body with a self-programmable electronic lock, in a furniture safe of 200 × 310 × 200 mm (7.87 × 12.2 × 7.87 in).
Best for: A household that wants a safe from a safe manufacturer rather than from a general brand.
≈ $140
