The 34FID Traditional from Montigo
You already have the fireplace. The Illume 34FID Traditional (SKU 34FIDNIS-01, model 34FIDN-S-F) is what turns it into one you actually use — a direct-vent gas insert that seals into an existing masonry or factory-built solid-fuel opening, so the draft up the chimney stops and the heat stays in the room. Minimum fireplace opening 34" W x 24" H x 15" D. Up to 31,000 BTU on natural gas (30,000 BTU propane with the GCA006 kit) behind a 28 3/8" W x 18 1/8" H viewing area. $4,029; 15-year firebox and burner warranty. P.4 efficiency: 81.1% NG / 82% LP.
Choose it if you are tired of hauling wood for a fire that mostly pulls warm air out of the house. Converting to sealed direct-vent gas fixes that. Two things make it possible: an opening of at least 34" W x 24" H x 15" D, and a chimney that can carry two co-linear flex liners (4" exhaust and 3" intake) with 10 to 36 feet of vertical run. The Traditional trim pairs the burner with the LGS34FI log set for a wood-fire look.
It is not right if you have no existing fireplace cavity — this is an insert, not a built-in — if your opening is smaller than the minimum above, if your chimney cannot take both co-linear liners run vertically to a vertical termination, if you want it in an outdoor space (this is an indoor appliance), if you need a unit listed for manufactured or mobile homes (this one is not), or if you want home-automation or app control: the Proflame 2 system cannot be used with home automation.
Specifications
The insert body measures 33 1/2" W x 23 7/8" H x 14 1/2" D. Fuel is natural gas at 7" WC supply pressure, or propane at 11" WC with the GCA006 conversion kit. Ignition is SIT Proflame 2 intermittent pilot (IPI) with a continuous-pilot (CPI) mode and 7-day CPI auto-shutoff timer; battery backup covers the control module (4 AA) and remote (3 AAA). Electrical service is 115 VAC, 60 Hz on a grounded 3-prong plug with a 3.15 A fuse. Side walls need 8 1/2" of clearance from the edge of the door/screen front, a combustible mantel needs at least 17" above the unit at up to 10" of mantel depth (add 1" of height per extra inch of depth), and non-combustible facing is required for the first 23" above the unit across the full width of the opening. Hearth protection in front is not required. The unit is equipped for 0–4,500 ft altitude; above that, contact a Montigo dealer. Firebox panels are required — the unit may only be operated with panels installed (red brick BRK34FIR, brown brick BRK34FIB, or porcelain RPP34FID).
34FID vs 30FID vs the DVCP
The 34FID is the larger FID insert: up to 31,000 BTU into a 34" x 24" x 15" opening (Traditional $4,029, Contemporary $4,769). If your opening is smaller — down to 30" W x 20" H x 14" D — the 30FID runs up to 24,000 BTU (Traditional $3,599, Contemporary $4,249). The Illume DVCP ($4,099 base) needs a deeper 34 1/2" x 24 1/2" x 18 1/2" cavity and an 8" existing flue, runs an adjustable 21,000–32,000 BTU, and is the only Illume insert approved for bedrooms and manufactured homes.
Traditional vs Contemporary
This page is the Traditional trim: a burner built for the LGS34FI log set, at 81.1% NG / 82% LP efficiency. The 34FID Contemporary ($4,769) runs a linear burner under fireglass, speckled stones, or driftwood media at 77.4% NG / 78.5% LP. Heat output, minimum opening, venting, and controls are identical — pick by the look you want.
Answers to common questions
Does it vent through my existing chimney, and what venting is included?
It vents through your existing chimney with two co-linear flex liners — 4" exhaust and 3" intake. Both liners must be connected; using the old flue as part of the vent path is not allowed. Termination is vertical only, with 10 to 36 feet of vent height. Approved components include DuraVent DirectVent Pro parts — the 46DVA-CL34 co-linear kit (46DVA-CL34KFB for factory-built fireplace relines), 46DVA-CT 3x4 adaptor, 46DVA-VCH high-wind vertical termination, and 3DFA-35 / 4DFA-35 aluminum flex with couplings — plus Montigo VT-series flex liners. Vent components are not included and are sold separately; The Torch Guys stocks compatible DuraVent.
What comes with it, and what do I have to buy separately?
The insert ships with the SIT Proflame 2 remote and a mesh safety screen barrier that must be installed. Required to complete the installation and sold separately: firebox panels (red brick BRK34FIR, brown brick BRK34FIB, or porcelain RPP34FID — the unit may only be run with panels installed), a faceplate (Standard FP34FID-01 at 46 1/2" x 31 3/4", Oversized FP34FIDOS-01, 4-Sided FP34FID4S-01, or the FP34FIDOF offset kit), and the co-linear vent liners. The Traditional burner is built around the LGS34FI log set — confirm log set availability with us when you order. Optional: RFKFID or RFKFIDECO fan/blower kit and the GCA006 propane conversion kit.
Will it work during a power outage?
Yes. The SIT Proflame 2 ignition has battery backup — 4 AA batteries in the control module and 3 AAA in the remote — so the fireplace can light and run without household power. The optional fan kit will not run during an outage. Normal service is 115 VAC, 60 Hz on a grounded 3-prong plug with a 3.15 A fuse.
What mantel and facing clearances does it need?
A combustible mantel needs at least 17" of clearance above the unit at up to 10" of mantel depth — the mantel may extend further out if it is raised proportionately (1" extra depth = 1" extra height). Non-combustible facing material is required above the unit for the first 23", across the full width of the fireplace opening. Run anything you plan to mount on the wall above past your installer first.
Can I run it on propane?
Yes. The propane variant ships with the GCA006 conversion kit ($4,178 versus $4,029 for natural gas). On propane, maximum input is 30,000 BTU.
Does it work with smart-home systems or a phone app?
No. The included SIT Proflame 2 remote covers on/off, six flame levels, IPI/CPI pilot select, thermostat and smart-thermostat modes, six fan speeds, accent lights, and key lock — but Montigo's manual states the Proflame 2 system cannot be used with home automation systems, and no WiFi module is documented for this insert.
What’s included, what’s required, and what’s optional?
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Included in the box: the insert, glass door and barrier screen assemblies, media, the remote, and the installation hardware.
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Required to complete the installation, purchased separately: the co-linear vent liners and termination — DuraVent DirectVent Pro co-linear components are approved alongside Montigo’s.
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Optional: alternate media, surrounds, and the wall remote.
What happens with the warranty if I buy online?
Buying online changes nothing here: The Torch Guys is 1 of only 3 authorized Montigo e-commerce dealers in the United States, and we file warranty claims on your behalf. Coverage under the Montigo Residential Warranty (administered by Empire Comfort Systems): 15 years on the firebox/heat exchanger and main burner, 15 years on Montigo venting, 10 years on terminations, 1 year on controls, electrical, media, glass and barriers, and 1 year labor. Annual service by a qualified dealer is required to keep coverage active.
