"Retired nurse. Slid it into my 1970s brick mantel opening — the one I finally decided to stop staring at empty. 23 inches was the exact right width for my surround. Room feels used again."
Deborah H. — Vermont
"Retired machinist. I measured the opening, measured the box, ordered it. Fits with half an inch of margin. Clamp meter reads 1400W on high. No app to configure. That is a feature, not a shortcoming."
Marcus D. — New Hampshire
"Cottage rental host. Put The Firebox Wide in our lake-cabin's wider fireplace surround. Guests keep asking if the fire is real. Bookings up. Zero maintenance."
Linda R. — Ohio
The Firebox Wide
The Firebox Wide
IN STOCK — SHIPS WITHIN 1 BUSINESS DAY
1400W. 23-inch insert with amber log flame. 400 sq ft. Remote + touch controls. CSA + UL certified.
Regular price
$274.95
Regular price
$479.95
Sale price
$274.95
Unit price
per
Couldn't load pickup availability
- Realistic Log Flame + 3-Level Brightness
- 400 sq ft. 23 in wide. 5 in deep.
Product Details
Product Details
- Heating element: resistive-coil convection heater with front-strip vent, self-regulating
- Power: 1400W, 5,000 BTU, 120V / 60Hz
- Coverage: up to 400 sq ft
- Overall dimensions: 25" wide × 5" deep × 17" tall (front panel 23" × 17")
- Weight: 16 lbs
- Materials: steel and iron housing, tempered glass front, molded log bed with LED-lit amber flame
- Installation: drops into existing fireplace opening / TV console cutout / cabinet cutout, or sits freestanding on a hearth stone (no wall-mount bracket needed)
- Flame: realistic amber-orange log flame effect, 3-level brightness (low / medium / high)
- Modes: flame + heat, flame only
- Controls: front-panel touch buttons + handheld remote (26 ft range)
- Timer: 0-6 hours in one-hour increments
- Thermostat range: 62°F - 82°F, adjustable in 1°F steps
- Safety: overheat shutoff, cool-touch tempered glass front, CSA certified, UL-certified plug
Shipping & Delivery
Shipping & Delivery
Ships from the USA – Our orders ship from US fulfillment warehouses in California, Illinois, and New Jersey, based on the closest distribution center to your address.
📦 Order Processing – 1-2 business days from order placement.
🚚 Shipping Time – 3-5 business days from ship date via FedEx Ground or OnTrac (carrier selected by route).
📍 Free Shipping – Continental US, all orders.
📩 Full Tracking Included – You will receive an automatic tracking email the moment your order ships, with delivery updates along the way.
Questions before it arrives? Just reach out.
30-Day Return Window
30-Day Return Window
30-Day Return Window - Request a return within 30 days of delivery. Approved returns pay a 25% restocking fee unless the unit arrived defective. If defective, we cover the return and send a replacement or full refund.
Damaged in transit? Photograph the box and unit, email us within 48 hours, and we handle the freight claim and replacement.
What is not covered: shipping cost on non-defective returns; damage from installation into an opening the unit was not sized to fit (check the 25"W × 5"D × 17"H dimensions against your opening before ordering).
"Retired nurse. Slid it into my 1970s brick mantel opening — the one I finally decided to stop staring at empty. 23 inches was the exact right width for my surround. Room feels used again."
Deborah H. — Vermont
"Retired machinist. I measured the opening, measured the box, ordered it. Fits with half an inch of margin. Clamp meter reads 1400W on high. No app to configure. That is a feature, not a shortcoming."
Marcus D. — New Hampshire
"Cottage rental host. Put The Firebox Wide in our lake-cabin's wider fireplace surround. Guests keep asking if the fire is real. Bookings up. Zero maintenance."
Linda R. — Ohio
Scroll to...
📋 What's Included
⭐️ Customer Reviews
❓ FAQ
Real Living Rooms. Real Cold Winter Nights. Real 23-Inch Log-Flame Insert.
You have a wider existing mantel surround, a larger TV console cutout, or a sealed-off wider fireplace opening. You do not want to gut it, hire a contractor, and pay $2,000 for a real insert. That is what this is for.
4 Things We Care About
100,000+ Warm Living Rooms. And Counting.
Over 3,200 verified 5-star reviews — and counting.
Built to Last, Not to Impress
Built for the Wider Fireplace, the Larger TV Stand, and the Long Winter Evening.
Iron and steel housing. Tempered glass front. 1400W, 5,000 BTU, self-regulating. Front-strip vent design pushes warm air out the top so the glass stays cool to touch and nothing hot faces the room. Weighs 16 lbs - one person can carry it in from the porch and lift it into an opening without help.
Slide it in tonight. Warm the room while amber log flames dance behind 23 inches of tempered glass. The wider mantel you sealed off years ago is finally doing something again.
Drop It In. Plug It In. Warm the Room. Watch 23 Inches of Log Flame. Tonight.
Measure your existing opening against 25"W x 17"H x 5"D. If it fits, slide it in - the mounting flanges on the corners will screw into wood if you want it locked, otherwise gravity holds it. Plug into a standard wall outlet on its own circuit. Point the remote. Watch the amber logs light up.
No wall bracket to anchor into studs. No drywall to cut. No contractor. No inspection.
Real homeowners. Real insert.
Retired nurse. Slid it into the 23-inch mantel opening that had sat empty for 30 years.
"My 1970s brick fireplace surround is right around 24 inches wide inside — too wide for a lot of the small inserts I looked at, and I was not going to pay a contractor to reduce the opening or install a real insert. The Firebox Wide at 23 inches wide slid straight in with almost no gap. My son helped me carry it in from the porch on a Sunday, we plugged it in, and I actually cried when the flames came on — that opening had been dark since my husband died in 2018. The room feels like a room again."
Vermont
Retired machinist. Measured everything. Ordered the Wide because my opening was 25 inches, not 20.
"I read the spec sheet on both Fireboxes — the 18-inch and the 23-inch Wide. Measured my opening at 25 by 18 by 8 deep. The 18-inch would have left too much dead space around it. The 23-inch Wide fits with about an inch of margin on each side and looks like it belongs there. Clamp meter reads exactly 1400W on high. No app, no WiFi, no Alexa — remote and touch buttons. That is my kind of appliance."
New Hampshire
Cottage-rental host. Put a Firebox Wide in our lake cabin. Guests keep asking if the fire is real.
"Real estate broker by day, cottage-rental host on the side. Our lake cabin has a wide painted-white mantel surround with an opening about 26 inches inside. I put The Firebox Wide right in — no bracket, no anchoring, just sitting there. Guests genuinely ask if it's a real fire before they touch the glass. Bookings for the property have picked up since we added it to the listing photos, and there is zero maintenance. Best 275 dollars I have spent on that cabin."
Ohio
Real Reviews From Real Customers
★★★★★
Customer Photos
★★★★★
Wider brick surround finally filled. Room went from empty to used overnight.
Our 1975 brick fireplace opening is 25 inches wide by 18 tall. The 18-inch Firebox would have left obvious gaps on the sides. The 23-inch Wide fills it with about an inch of margin — looks like it was made for the opening. Slid in Sunday afternoon, plugged into the outlet the previous gas insert had been on. Flames came up. That opening had been decorative-only since 1993. My wife walked in from the grocery store and just said "oh." That is the review. The log flame effect at dusk in the winter is more convincing than I expected. Not real fire but real enough that the room feels lived in for the first time in decades.
★★★★★
Retired. Wanted controls I understood. No app. This has that.
Every electric fireplace insert I looked at came with an app requirement, WiFi pairing, and an Alexa integration. I do not want any of that. I am 68. I want a button, a remote, and a knob. The Firebox Wide has the remote (works from across the room), has touch buttons on the top strip, no app, no WiFi setup, no Alexa. Set the thermostat to 72, flame comes on. Press power when we go to bed. That is the entire user manual. A machine that behaves like a machine.
★★★★★
Retrofit into a wider TV console cutout. Fits perfect. Wife happy.
Bought a large media console from a big-box store four years ago that came with a rectangular fireplace-shaped cutout in the middle — much wider than the 18-inch inserts you find easily. Measured it at 24 wide by 18 tall by 8 deep. The 23-inch Wide slid in with less than an inch of gap on each side and looks like it belongs there. Held in by gravity and the flat back of the console. Plugged into the surge protector. My wife stopped complaining about the empty rectangle. That is the review.
★★★★★
Contractor quoted 3200 for a gas insert conversion. This was 275.
Wide masonry fireplace in our 1960s ranch has been sealed since we bought the house — chimney needs a full rebuild we are not going to pay for. Contractor came out and quoted $3,200 for a proper gas insert plus another $1,800 for the gas line, plus permit. About $5,000 total. I ordered The Firebox Wide for $275 and it slid straight into the existing opening. Plug into a nearby outlet. Done. Yes it's an electric log flame, not real gas. But at 5% of the cost and no permit, I can live with the tradeoff.
★★★★★
HVAC tech. Clamp meter reads 1400W on high. Matches the label.
HVAC / electrical tech, 22 years in the trade. Clamp meter on the plug: reads exactly 12A at 120V under load = 1440W. Label says 1400W. Close enough that I have zero complaints. Coverage rating is 400 sq ft — I put mine in my 350 sq ft home office and it goes from 62 to 72 in about 15 minutes and holds it. Wider glass window than the 18-inch model, and it does look better in a bigger room. Sized right, honestly labeled.
★★★★★
Basement rec room. Fits our wider stone hearth.
Finished basement with a wide stone hearth ledge from an old wood stove we removed years ago. Ledge is about 4 feet wide. The 23-inch Firebox Wide sits directly on the stone — no mounting, no anchoring, just gravity. Cord runs along the baseboard to a nearby outlet. Looks like it was always supposed to be there. Basement finally feels like a real family room, not a storage room with a couch.
Verified Reviews Only
To ensure authenticity, you must be logged into your account to write a review. We verify all reviews against purchase history.
Sign In to ContinueSame heater core as the smaller 18-inch Firebox (1400W, 5000 BTU, 400 sq ft coverage). Difference is width: 23 inches vs 18 inches on the front panel. If your existing mantel opening or TV cabinet cutout is closer to 23-26 inches wide, this is the one that fits. If closer to 18-20 inches, get the smaller Firebox instead. The Wide holds more visual weight in a wider opening — an 18-inch insert in a 25-inch opening reads as too small.
The Crystal Panel line is a different product family entirely — those are wall-mount modern panels for bare walls. The Firebox line is inserts for existing openings.
No. It is an LED-lit visual effect behind a tempered glass front, with a molded resin log bed that lights up. The flames are convincing at normal viewing distance, especially in evening light, but there is no combustion, no real fire, no wood being burned. That's the tradeoff: you get a warm glow with no smoke, no ash, no chimney inspection, no wood to haul.
Any opening at least 25" wide, 17" tall, and 5" deep with a wall outlet within cord reach. Common installs: an existing sealed-off masonry fireplace with a wider opening, a TV console with a fireplace-shaped cutout, a wide cabinet or built-in with a rectangular opening, or freestanding on a flat hearth stone / raised platform. There is no wall-mount bracket — this product is not designed to hang on a bare wall. If that's what you need, look at the Crystal Panel line instead. Do NOT install into a working chimney flue where a real fire has ever burned.
Wipe the tempered glass front with a soft dry cloth every few weeks to keep dust off the flame view. Occasionally vacuum the front-strip vent with a brush attachment. Do not use liquid cleaners or sprays anywhere near the vent or the top control panel. Do not open the housing.
The flame-only mode (no heat) draws roughly 12-14W — about the same as a nightlight — and is designed for that. The heat mode should not be left running unattended, ever. Use the 0-6 hour timer if you want heat for a set period. Never leave heat mode on when you leave the house or go to sleep.
At 25 x 17 x 5 inches and 16 lbs it will physically fit in a large fifth-wheel or class-A RV with a built-in fireplace cutout. Draw is 1400W (about 12A at 120V), which means it needs its own dedicated circuit and will not run off a small inverter or off-grid solar setup unless you have significant generator capacity. Generator 3000W+ continuous, runs fine. Small 1000-1500W inverters cannot handle it.
Your Questions, Answered Honestly.
We know you've probably been burned before. So we're going to be straight with you.
Still Have Questions? Talk to Us.
Another cold night is coming. You already know what it feels like.
Every 1500W-class heater on the market makes the same heat. What differs about this one: 23 inches of realistic amber log flame behind tempered glass, dropping straight into the wider fireplace opening, TV console cutout, or cabinet opening you already have. No contractor. No permit. No app to configure. Plug it in tonight and the room finally feels the way you wanted it to feel.