Montigo Exemplar R420L Single-Sided Linear Fireplace, 53 9/16" Wide

The Montigo Exemplar R420L starts with a fact worth noting: a 49 1/4" x 16 1/8" viewing area housed in a firebox that measures 53 9/16" wide and 38 1/16" tall. That's not a fireplace you walk past without noticing — it's a linear statement piece engineered for installations where the flame itself is the architecture.

Running on liquid propane at 55,000 BTU/hr, the R420L uses a linear burner paired with glass accessories to produce the kind of clean, ribbon-style flame that defines contemporary hearth design. Heat output is substantial without being the whole story — the visual proportion of this unit is what earns its place in serious architectural projects.

Ignition is handled by a Honeywell Hot Surface Ignition (HSI) system, one of the most dependable technologies in the industry. No pilot light to babysit, no manual lighting ritual — just a reliable, repeatable start every time. For a fireplace at this scale, that kind of dependability isn't a bonus feature, it's a baseline expectation Montigo has met.

Venting is designated for a 5"/8" diameter power vent system, and the R420L ships configured for top vent installation. Rear vent conversion is supported, giving your installer meaningful flexibility when working around structural constraints. That adaptability matters in custom builds where the fireplace location is decided long before the mechanical details are sorted.

The R420L is part of Montigo's R-Series Exemplar Single-Sided line, which spans multiple widths — the R320, R420, R520, R720, and R820 — making it easier to specify the right scale for a given space without compromising on the design language across a project. The frame width on this unit comes in at 60 11/16", and the firebox depth is 21 1/8", both worth confirming early in your rough-in planning.

One compatibility note worth keeping front of mind: the R420L's warranty requires the use of genuine Montigo parts. Third-party substitutions void coverage, so specify accordingly when working with your installation team.

At $10,779.00, the R420L is an investment in a fireplace that doesn't ask to be the center of attention — it simply is.

• 53 9/16" firebox width with a 49 1/4" x 16 1/8" viewing area for a dramatic linear flame presentation
• 55,000 BTU/hr output on liquid propane (LP)
• Honeywell Hot Surface Ignition (HSI) for consistent, reliable starts
• Linear burner with glass accessories for a clean, contemporary flame profile
• Power vent system, 5"/8" diameter, with top or rear vent capability
• Ships configured for top vent; rear vent conversion supported
• Firebox depth: 21 1/8" | Frame width: 60 11/16"
• Part of the R-Series Exemplar Single-Sided line (R320 through R820) for scalable specification
• Warranty valid only with genuine Montigo parts — no third-party substitutions