The conclusion One point eight cubic feet of steel with an electronic keypad and full external dimensions, at a hundred and five dollars — the volume is the argument and it is a real one. Everything this shelf's introduction asks to compare is missing: no internal dimensions to check a folder against, no wall or door thickness, no anchoring, and no security grade. For a large safe at this price those four silences are the whole specification.
No internal dimensions. No wall thickness. No anchoring. No grade. No contents.
The capacity is the outside
Not the inside.
Thirteen point eight by thirteen by nineteen point seven inches is the box. One
point eight cubic feet is what that box encloses.
This shelf’s buying tip: subtract the door and the walls before believing the
capacity. A passport folder that will not lie flat is a safe that stays open.
At least three of the seventeen safes in this group publish an internal size. This is not one
of them.
Bolting down is the first thing the shelf says
And the page does not mention it.
This shelf’s introduction opens on it: a safe which is not bolted down is portable,
and a portable safe is opened at leisure somewhere else.
Four of the eleven here state their fixings. This states none — so check for
pre-drilled holes when it arrives, and buy anchors.
No grade, like every safe here
Which is worth saying once, plainly.
Eleven safes on this shelf. Zero burglary grades — no UL 1037, no UL 687, no
EN 1143-1 class, no cash rating.
Two publish fire and water certifications, which answer a different question.
An ungraded safe is a deterrent and a delay. Tell your insurer what it is.
Availability
On sale at around $105 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.
What reassures, and what does not
Strengths
One point eight cubic feet, the second largest in this group
Full external dimensions published
An electronic keypad rather than a key alone
Steel construction stated
Nineteen point seven inches tall, which takes a laptop upright
A hundred and five dollars for the volume
Compromises
No internal dimensions, which is the figure this shelf's buying tip asks for
No wall or door thickness
No security grade of any kind
No anchoring, and this shelf's introduction puts bolting down first
No code length and no lockout behavior described
Nothing listed in the box: no shelf, no tray, no fixings
Specifications
Capacity
1.8 cubic feet — stated. The second largest in this group, behind a 3.4 cu ft safe
Dimensions
13.8 in wide, 13 in deep, 19.7 in high — stated as the external size. No internal dimensions are given, and this shelf's buying tip asks you to subtract the door and the walls before believing a capacity
Body
Steel — stated, with no thickness. This shelf's introduction lists body and door thickness among the things this shelf compares, and no safe in this group publishes one
Lock
An electronic keypad — stated, with no code length, no wrong-entry lockout and no override method described
Anchoring
Not published. This shelf's introduction opens on it: a safe which is not bolted down is portable, and a portable safe is opened at leisure somewhere else
Grade
Not published. No UL 1037 or UL 687 grade, no EN 1143-1 class, no cash rating and no fire or water certification
Contents
Not described — no shelf, no tray and no fixings listed
Stated for
Documents, jewelry and valuables
Amazon reference
B078K2YPRW
EAN
0192233016962
The questions we are asked
How much will it actually hold?
Less than 1.8 cubic feet, and the page will not say how much less. This shelf's buying tip is explicit: subtract the door and the walls before believing the capacity, because a safe quoted at twenty liters holds far less usable volume than a twenty-liter box. Here you get an external 13.8 by 13 by 19.7 inches and a cubic-foot figure, with no internal measurement — so the only way to know whether a document folder lies flat is to buy it and find out. Three safes in this group publish an internal size.
Does it bolt down?
The page does not say, which on this shelf is the omission that matters most. This shelf's introduction opens on it: a safe which is not bolted down is portable, and a portable safe is opened at leisure somewhere else. Most safes of this size have pre-drilled holes in the base and the back; four of the eleven in this group state that they do and say what fixings are supplied. This one states neither. Assume you will need to buy anchors and check for holes when it arrives.
Is there a security rating?
None, and that is true of every safe in this group. This shelf's introduction says manufacturers declare resistance against a scale — UL 1037, UL 687, or the European EN 1143-1 — or against a cash rating, and that those are declared figures rather than measurements made here. Eleven safes on this shelf publish no burglary grade at all; two publish fire and water certifications instead, which protect against a different kind of loss. Read an ungraded safe as a deterrent and a delay, not as a rated container, and tell your insurer what it is.
Against the rest of the home safes
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
Model
Price
Dimensions
Lock
Amazon Basics 50SAM steel home security safe, 1.8 cu ft
$105
13.8 in wide, 13 in deep, 19.7 in high — stated as the external size. No internal dimensions are given, and this shelf's buying tip asks you to subtract the door and the walls before believing a capacity
An electronic keypad — stated, with no code length, no wrong-entry lockout and no override method described
14.3 × 15.5 × 13.5 in — stated as the external size. No internal dimensions, although the interior is stated to fit hanging file folders, which is a more useful statement than a cubic-foot figure
A key lock with two keys, stated to keep the lid closed during fire events. That last clause matters: a lid that springs open in a fire is a fire box that has failed
What separates the models, in security devices
If price decides: SentrySafe HD4100 fireproof and waterproof file box, 14.3 × 15.5 × 13.5 in, at $68.
What this one costs among home safes
Details checked on October 8, 2026.
The buyer this one serves, among security devices
A household that wants volume and will measure the inside itself before buying
What buyers actually choose
Amazon reports what buyers took in the month before this page was last checked: at least 1,000.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Sources
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.
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.