The Firebox 1400W electric fireplace insert. 18 inches wide, 5 inches deep. 5,000 BTU. 400 sq ft coverage. Realistic amber log-flame effect with 3 brightness levels. Remote + touch panel. Drops into an existing masonry fireplace opening, TV console cutout, or cabinet opening — or sits freestanding on a hearth stone. CSA + UL certified. We'll say it before you do Every 1500W-class electric fireplace on the market makes essentially the same heat. Ours, the one at the big-box store, the one your neighbor bought online — watts in equals BTU out. Anyone telling you their fireplace is "more efficient" is selling you a story. What actually differs about The Firebox is where it fits. This is not a wall-mount modern panel like the Crystal Panel line. This is an insert. It drops into the rectangular opening you already have — the masonry fireplace surround that has sat sealed and empty since 2003, the TV console with the factory-made fireplace cutout you never bought the insert for, the built-in cabinet with a fireplace-shaped hole your carpenter left for you. Or it sits freestanding on a flat hearth stone with nothing holding it down but its own 13.5 lbs. No wall-mount bracket. No drywall to cut. No contractor. What Actually Differs 18 inches wide, 17.5 inches tall, 5 inches deep. Sized to drop into the standard-sized rectangular openings that already exist in a lot of homes: original 1950s-1980s masonry fireplace surrounds, factory-cut TV console cutouts, and modular cabinet openings. Measure your existing opening. If it's at least 19" wide, 17.5" tall, and 5" deep, this fits. Mounting flanges on the corners let you screw it into a wooden surround if you want it locked in — otherwise gravity holds it in place. Realistic amber log-flame effect. Molded resin log bed with LED backlighting behind tempered glass. 3 flame brightness levels (low, medium, high). This is the traditional log-fire look, not the modern crystal-ember look of the Crystal Panel line. At normal viewing distance in evening light, the flames read as convincing. It is still an LED effect — no wood, no smoke, no smell. 1400W. 5,000 BTU. 400 sq ft coverage. Same effective heating power as most 1500W-class competitors. Rated to warm a well-insulated 400 sq ft room to comfortable temperature. In a drafty 800 sq ft great room, the Firebox will feel warmer near it but the far corners will still need your regular heat. Remote + touch panel. That's it. Handheld remote with 26 ft range. Touch buttons on the top strip for flame, power, timer, and thermostat. Adjustable thermostat 62°F–82°F. 0–6 hour timer in one-hour increments. No phone app. No WiFi setup. No Alexa configuration. No cloud account. If you have felt like every appliance in your house has become a Bluetooth-pairing exercise, that absence is the point. Overheat shutoff. Cool-touch tempered glass. CSA + UL certified. Element cycles down automatically if the housing overheats. Tempered glass front stays cool to touch. Iron and steel housing. Front-strip vent moves warm air out the top so nothing hot faces the room. Full CSA certification and UL-certified plug — the same certifications the brand-name inserts carry. Perfect For An existing masonry fireplace surround that has been sealed off and sitting empty (any opening at least 19" × 17.5" × 5"). A TV media console with a factory-made rectangular fireplace-insert cutout in the middle. A built-in cabinet or bookshelf with an opening around the right size. Freestanding on a flat hearth stone, raised stone platform, or slate ledge. A small-to-medium room, home office, guest bedroom, or cabin — anywhere 300–400 sq ft with an outlet nearby. Rental apartments where you can't modify the wall but there's an existing decorative fireplace opening. People who want a fireplace without an app, cloud account, or WiFi setup. Specifications Power: 1400W, 5,000 BTU Coverage: up to 400 sq ft Voltage / Frequency: 120V / 60Hz Amperage: ~12A (standard household 15A circuit) Overall Dimensions: 19" wide × 5" deep × 17.5" tall Front Panel Dimensions: 18" × 17" Weight: 13.5 lbs Power Cord: standard three-prong plug Materials: iron and steel housing, tempered glass front, molded resin log bed with LED backlighting Installation: insert into existing rectangular opening (mounting flanges included) or freestanding on hearth stone; no wall-mount bracket Flame: realistic amber log flame effect, 3-level brightness (low / medium / high) Modes: flame + heat, flame only Thermostat: adjustable 62°F–82°F in 1°F steps Controls: handheld remote (26 ft range) + top-panel touch buttons Timer: 0–6 hours in one-hour increments Safety: overheat shutoff, cool-touch tempered glass, CSA certified, UL-certified plug What Is Included 1× Firebox 18" electric fireplace insert 1× handheld remote control (battery included) 1× user manual with insert and freestanding installation instructions What It Cannot Do It is not wall-mount. There is no wall-mount bracket in the box. If you have a bare wall and want a modern flat panel hanging on it, this is not the right product — look at The Crystal Panel line instead. This is an insert designed to drop into an existing rectangular opening. It is not warmer than a competitor's 1500W insert. Same class of heater core. If you need to warm a larger room, this doesn't do that — a single 1400W unit warms a well-insulated 300–400 sq ft room, no more. For a bigger room you need central heat or a second unit. It is not smart-home compatible. No app. No WiFi. No Alexa integration. No IFTTT triggers. Remote and top-panel touch buttons only. If you want to say "Alexa, turn on the fireplace," this doesn't do that — look at The Crystal Panel line. It is not a real fire. The molded log bed and amber flame effect look convincing at normal viewing distance in evening light, but it is an LED-lit visual effect. No wood, no smoke, no crackling, no chimney draw. It should not be left running unattended in heat mode. The overheat shutoff and 0–6 hour timer exist because unattended space-heater use is how house fires happen. Use the timer. Never leave heat mode on when you leave the house or go to sleep. Flame-only mode (no heat, ~12W draw) is safe to leave overnight. It draws roughly 12A at 1400W. Plug directly into a wall outlet on its own circuit, not a power strip or extension cord. If the outlet is on a shared circuit with a microwave or window AC, you'll trip the breaker. It does not fit every opening. Measure yours: 19" wide × 17.5" tall × 5" deep minimum. A too-small opening will not accommodate this. Check before ordering.