
Amantii BI-30 Extraslim
6.6Good · out of 10$1,199 Price on Sep 30, 2026 · may have changed- Built-in & wall-mounted inserts

Product images: Amazon listings
The Amantii BI-30 Extraslim is an electric fireplace insert built around flames with the heat switched off. Think of it for cosy evenings without ashes to sweep: 6.6/10 on what its listing documents.
| Brand | Amantii |
|---|---|
| Category | Built-in & wall-mounted inserts |
| Coverage (stated) | Up to 400 sq ft |
| Flame without heat | Stated in the listing |
| ASIN | B07HKWZMCH |
Full listing title: Amantii BI-30 Extraslim Indoor or Outdoor Electric Fireplace
The two electric fireplace inserts closest to it on our rating, with a dated price.



For the living room, a 400 sq ft coverage claim is pitched at a main room, not a box room.
For a bedroom or a study, the flame runs without heat, so it can glow on a warm night too.
On balance it covers both, as long as your wall and your outlet match its numbers.
The seller states, word for word, in the Amantii BI-30 Extraslim listing:
Integrated heater for zone heating of approximately 400 square feet and can be turned off for year-round use.
Two flame patterns allows for a choice between contemporary and traditional styles.
25.25 x 15.875 inches (Width x Height); Overall Size: 29.125 x 4 x 19.875 inches (Width x Depth x Height).
Hold these against the manual of the exact model before you order.

The button opens the exact listing (ASIN B07HKWZMCH), where today's price, stock and seller apply.

Want to run it from your phone? The Touchstone Sideline 60" Smart (9.5/10) works with Alexa, per its listing.
More flame colors? The Xbeauty 60" Recessed and Wall Mounted (9.3/10) lists 12.
Our take
The best thing about the Amantii BI-30 Extraslim is flames with the heat switched off. No buyer reviews yet, so this Amantii electric fireplace insert has to win you over on paper. The catch with the Amantii: no stated width in the listing, while most picks here give one. We'd pick it if you want the glow all year, heat or no heat; otherwise, put it next to the BOSSIN 50" Ultra-Thin Linear first.
A big, flat box with glass inside: open it with two people and check the front before the cardboard goes out.
Try the flame at a few brightness settings; lower often looks more real at night.
A quick dust of the glass now and then, and a look at the manual's cleaning page once a season. Our maintenance guide has the rest.
Heater off, flame on: the glow stays on the wall in July without warming the room.
One thing to settle before the Amantii BI-30 Extraslim ships: check the size, because the listing we read gives no clear width, and the size of your opening decides everything else.
Measure the cavity or the opening (width, height and the depth the manual asks for) and hold it against the installation drawing of this exact model. Our recessed installation guide has the order.
Pick the outlet before you pick the finish: a free one close by, nothing heavy on the same circuit, and no extension cord. Our power requirements guide lists the questions to ask.
Treat it as supplemental heat for one room. Our supplemental heat planner turns your square footage into a rough answer.
Glass-fronted inserts are big, flat boxes: plan two people for the unboxing, and decide early who frames the wall. Our built-in vs wall-mounted guide weighs recessed against wall-mounted.
How the Amantii BI-30 Extraslim stacks up against the closest alternative, the BOSSIN 50" Ultra-Thin Linear.
| Criterion | Amantii BI-30 Extraslim | BOSSIN 50" Ultra-Thin Linear |
|---|---|---|
| Our rating | 6.6/10 | 6.7/10 |
| Width | Not stated | 50 in |
| Heater | Not stated | 1,500 W |
Pick the BOSSIN 50" Ultra-Thin Linear if you want our higher-rated option (6.7/10), with a wider unit (50 in) and more stated heat (1,500 W).
We rate it 6.6/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
The listing we read does not state its supply voltage or heater wattage. Read the supply, plug and circuit conditions on the exact listing and in the manual before you order, and never run a heater on an extension cord or a shared power strip. Anything beyond an existing standard outlet, hardwiring or 240 V included, is a job for a licensed electrician.
Its listing states a flame that runs without the heat. Those are the seller's figures; for how real the flames look in a living room and how loud the fan runs at night, the buyer reviews are the better guide.
Your wall: measure the cavity or the opening (width, height and the depth the manual asks for) and hold it against the installation drawing of this exact model. Our recessed installation guide has the order. The outlet: pick the outlet before you pick the finish: a free one close by, nothing heavy on the same circuit, and no extension cord. Our power requirements guide lists the questions to ask. Heat for your room: treat it as supplemental heat for one room. Our supplemental heat planner turns your square footage into a rough answer. Delivery and install: glass-fronted inserts are big, flat boxes: plan two people for the unboxing, and decide early who frames the wall. Our built-in vs wall-mounted guide weighs recessed against wall-mounted.
We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.
If the Amantii BI-30 Extraslim hasn't sold you yet, see where it ranks, read the guides that feature it or browse all built-in & wall-mounted inserts.