The D4815NI-2 from Montigo
The Montigo Distinction D4815NI-2 gives you 48" x 14 7/8" of uninterrupted flame, behind a micro mesh screen fine enough that you stop noticing it. No bars. No grille. Just the fire. It is a 48" single-sided direct vent gas fireplace: 40,000 BTU maximum on natural gas, turned down to 28,000 BTU from the remote when you want the look without the heat. You frame 71 3/4" W x 49 15/16" H x 17 1/2" D for it. $6,829, with a 15-year warranty on the firebox, heat exchanger, and main burner. It ships set up for natural gas; the GCA017 propane conversion kit adds $149 at checkout. All of this is standard, none of it an upcharge: the Proflame 2 remote, six-speed fans, multicolor LED uplighting, that micro mesh screen, and a concealed burner under 3 bags (9 lbs) of Ice fireglass.
Choose the D4815NI-2 if the 48" wall it goes on has to earn its keep. 40,000 BTU is real heat, not a decorative flicker — and the 30% turndown to 28,000 BTU means you are never picking between having a fire and having a room you can sit in. At 76.85% efficiency on natural gas, leaving it running all evening is not an extravagance. It is built for indoors first, though it is also approved for a protected outdoor spot — covered on the front and sides, never run below freezing.
It is not right if you cannot frame 17 1/2" deep and run 5"/8" direct vent pipe to a roof or exterior wall, if the site sits above 4,500 ft elevation, if there is no 120V power at the fireplace location, or if you want it in a fully exposed outdoor spot — the outdoor allowance covers protected, covered locations only, with no operation below 32°F.
Specifications
Framing is 71 3/4" wide, 49 15/16" high, and 17 1/2" deep, with 0" clearance at the floor, 1/2" at the back, 4" at the sides, and 8 13/16" (to a combustible header) at the top. Minimum base-to-ceiling height is 89". Without the Cool Wall Advantage kit, the chase requires a minimum 120 sq. in. opening for heat release. It runs on natural gas at 5.5"–13.8" W.C. supply pressure, or on propane (11"–13.8" W.C.) after conversion with the GCA017 kit, through a 1/2" NPT inlet. Ignition is Montigo's IPI Pilot on Demand system with a selectable continuous-pilot mode. Electrical is 115V/60Hz at under 12A, with a 4xAA battery backup tray for the ignition system. The unit is rated for elevations of 0–4,500 ft and certified to ANSI Z21.88 / CSA 2.33 as a vented gas fireplace heater. The viewing glass is 5mm high-temperature ceramic, and the included micro mesh safety screen must be installed — it is the burn-protection barrier. On vinyl or LVP flooring, use a 24" hearth or raise the unit 16".
How the D4815NI-2 compares in the Distinction lineup
The Distinction single-sided line comes in four sizes. Next to this 48" at $6,829, you have the 36" D3615NI-2 (35,000 BTU, 36" glass width, $5,779), the 63" D6315NI-2 (50,000 BTU, 63 1/16" glass width, $12,299), and the 72" D7215NI-2 (57,000 BTU, 73 7/8" glass width, $13,739). Pick by wall width and heat load: BTU output climbs with glass width, so size the fireplace to the room, not just the wall.
The same firebox also comes as the see-through D4815STNI-2 at $8,269, with glass on both faces. Two differences matter: the see-through frames 17 11/16" deep (this single-sided unit is 17 1/2"), and the see-through is indoor-only on both faces — the protected-outdoor allowance applies to single-sided units like this one only.
Answers to common questions
Can I mount a TV above this fireplace?
Careful consideration should always be given to mounting heat sensitive objects — like TVs or artwork — above a fireplace.
The Cool Wall Advantage Kit (optional/not included with the fireplace) is specifically designed to divert heat away from heat sensitive objects, creating an area safer for mounting a TV or hanging artwork. Specific examples for TVs and combustible mantels are provided in the installation manual.
The Torch Guys cannot guarantee that a TV, artwork or other object will be protected from heat, discoloration, or damage. Installation decisions must be based on applicable manufacturer instructions, site conditions, and the judgement of the installer.
For help locating or understanding the manufacturer’s published requirements for this fireplace, please call us at (410) 324-6322.
What venting does it use, and is the vent pipe included?
It is a direct vent unit using 5" inner / 8" outer pipe, vented from the top to a roof or exterior-wall termination. Vertical runs are 3 ft minimum to 32 ft maximum, with at least 36" of rise before the first elbow. Horizontal layouts allow up to 24 ft of horizontal run with 10 ft of vertical. The D4815 can be reduced to 4"/7" pipe with Montigo's PVA5487 reducer (not supplied). Three restrictor plates come in the box; vent pipe itself is sold separately. Beyond Montigo pipe, approved alternates include DuraVent, ICC, MetalFab, Selkirk, and Flexmaster 5"/8" systems — The Torch Guys stocks DuraVent. Non-approved venting voids the warranty. If your layout exceeds these limits, Montigo's Power Vent is the fallback, and only Montigo pipe may be used when power venting.
Will it work during a power outage?
Yes, for the flame. Ignition is intermittent pilot (Montigo's Pilot on Demand) on the Proflame 2 system, and the included 4xAA battery backup tray keeps ignition and flame control working when the power is out. The fans and LED uplighting run on 120V household power, so they stay off until power returns.
Can it be installed outdoors?
Indoors is the primary approval — the rating plate reads "For Indoor Use Only." Single-sided Distinction units are also approved for a protected outdoor location: an overhang covering the front and sides, at least 0.75 times the height from the bottom of the opening to the overhang; outdoor-rated wiring; venting that does not penetrate the building envelope; and no operation below freezing (32°F). Near salt water, Montigo recommends an outdoor fireplace instead.
What’s included, what’s required, and what’s optional?
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Included in the box: the concealed burner with 3 bags (9 lbs) of Ice fireglass, the Proflame 2 multi-function remote, remote Hi-Lo flame control, six-speed remote-controlled fans, the micro mesh safety screen, a black reflective glass interior, multicolor LED uplighting with its own remote, a 4xAA battery backup tray, the cement board facing kit, and three vent restrictor plates.
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Required to complete the installation, purchased separately: the vent pipe and termination — Montigo pipe, or a manual-approved alternate from DuraVent, ICC, MetalFab, Selkirk, or Flexmaster.
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Optional: Cool Wall Advantage kits, adjustable trim, fluted liners, SIT-WIFI app control, the EC1550 wall remote, and alternate media such as speckled stones and driftwood log sets.
What is Cool Wall Advantage, and do I need it?
Cool Wall Advantage is Montigo's optional heat-diversion system: it redirects firebox heat so finishes above the unit stay cooler, and it drops the mantel/TV clearance from 16" to 12". Without it, the chase needs a minimum 120 sq. in. opening for heat release. Montigo strongly recommends that the fireplace fans be disconnected when the Cool Wall Release or Cool Wall Advantage system is used, because running the fans with Cool Wall results in significantly higher wall temperatures. If you expect to use the fans, plan on a mantel instead.
Is the warranty valid if I buy online?
Yes, when you buy from an authorized dealer — and that matters, because Montigo's published warranty does not apply to equipment sold direct to consumers through non-authorized internet or auction sites. The Torch Guys is 1 of only 3 authorized Montigo e-commerce dealers in the United States, so the residential warranty program applies in full: 15 years on the firebox, heat exchanger, and main burner; 15 years on venting; 10 years on Montigo terminations; and 1 year on most components, media, glass, and labor. The unit must be installed and serviced annually by an authorized dealer to keep coverage valid. If you ever need a claim, we file it with Montigo on your behalf — call (410) 324-6322.
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