Montigo H42 Outdoor Vent-Free Fireplace, 42" Stainless Steel

The Montigo H42 is built around a 304 stainless steel firebox — the same alloy grade used in commercial kitchens and marine applications — which means it takes outdoor conditions seriously. At 40,000 BTUs on either natural gas or liquid propane, it produces real, substantial heat without requiring any venting whatsoever. No flue chase, no chase framing, no cap. That's a meaningful simplification when you're designing an outdoor structure.

The framing footprint is 42" wide by 46½" tall by 22⅜" deep, with the actual unit sitting slightly within that envelope at 43⁹⁄₁₆" × 41¹¹⁄₁₆" × 20⅜". The glass opening measures 36½" wide by 25½" tall — proportioned to command a wall rather than accent it. This isn't a compact courtyard insert; it's a focal point built to fill a proper outdoor fireplace surround.

Ignition is available as either a standing pilot or Hot Surface Ignition (HSI), so you can choose the reliability of a traditional pilot or the convenience of an electronic start. The traditional burner paired with the included fiber log set creates a familiar, natural-looking flame presentation — no abstract linear burner here, just a clean interpretation of a classic wood fire aesthetic.

Out of the box, the H42 includes three accessories that matter: a fiber log set for realistic flame presentation, a safety screen, and a snap-lock door. The snap-lock door is a particularly practical inclusion for an outdoor application — it seals the firebox when the unit is off, keeping wildlife, debris, and weather exactly where they belong (outside the firebox, not in it).

Vent-free design carries a specific advantage outdoors: it gives architects and designers maximum flexibility in placement. Without a venting requirement dictating the geometry of your build, the H42 can be centered in an outdoor kitchen, anchored in a freestanding pavilion, or set into a covered patio wall — wherever the design calls for it, provided local codes permit vent-free appliances in your application.

At $5,489, the H42 occupies the space between a decorative outdoor fireplace and a genuinely functional heating appliance. The 304 stainless construction, dual-fuel capability, and included accessory package reflect that positioning. If you need exact compatibility details for your specific installation scenario, consult your Montigo dealer or a licensed gas appliance installer before finalizing your build plans.

• 304 stainless steel firebox construction for lasting outdoor durability
• 40,000 BTU output on both natural gas and liquid propane
• Vent-free design — no flue or venting infrastructure required
• 36½" × 25½" glass opening delivers a commanding flame view
• 42" framing width fits standard outdoor fireplace surround dimensions
• Choice of standing pilot or Hot Surface Ignition (HSI)
• Traditional burner with included fiber log set for a classic flame aesthetic
• Snap-lock door included to seal the firebox from outdoor elements
• Safety screen included for added protection around the open flame
• Compatible with both natural gas and liquid propane fuel sources