{"product_id":"white-mountain-hearth-boulevard-48-see-through-vent-free-fireplace","title":"White Mountain Hearth Boulevard 48\" See-Through Linear Vent-Free Fireplace","description":"\u003cp\u003eThe Boulevard 48\" See-Through Vent-Free Linear Fireplace from White Mountain Hearth is built around a single, genuinely clever idea: one fireplace, two rooms. A 48-inch-wide by 12-inch-tall viewing opening passes cleanly through an interior wall, delivering both the visual drama of open flame and up to 36,000 BTU of real, room-warming heat to spaces on either side — simultaneously.\u003c\/p\u003e\u003cp\u003eBecause it's fully vent-free, there's no flue, no chase, and no chimney to plan around. The fireplace draws on room air for combustion and returns heat at a rated efficiency of 99.9%, making it one of the most thermally efficient ways to add a fire feature to a home. The framing footprint — 54.5 inches wide, 41.625 inches tall, and 12 inches deep — is substantial but purpose-built for a clean, built-in appearance once trimmed out.\u003c\/p\u003e\u003cp\u003eControl is handled by the ProFlame IP Electronic Control system paired with a variable thermostat remote. The electronic variable gas valve allows true flame modulation between the 25,000 BTU minimum and 36,000 BTU maximum outputs, so you're not locked into \"full blast or nothing.\" Ignition is intermittent pilot (IP), meaning there's no standing pilot burning fuel when the fireplace isn't in use — a quietly useful detail that adds up over a heating season.\u003c\/p\u003e\u003cp\u003eThe firebox ships ready for glass media: approximately 3 square feet of crushed glass is required (sold separately), and the unit is also compatible with glass drops and decorative rocks. For a more traditional look, driftwood ceramic fiber log sets are available as an optional accessory. Accent light kits and decorative trim kits round out the accessory catalog, offering meaningful customization without requiring a trip back to the drawing board.\u003c\/p\u003e\u003cp\u003eA fine mesh barrier screen is included, addressing the open-face safety considerations that come with a vent-free design at this scale. The non-clearance classification and interior wall installation type make it straightforward to spec into new construction or a thoughtfully planned renovation.\u003c\/p\u003e\u003cp\u003eThe VFLB48SP90N is the natural gas configuration. A liquid propane version (VFLB48SP90P) is available separately. The unit is manufactured in the United States and backed by a 5-year limited warranty on the fireplace, a 5-year limited labor warranty, and a 1-year limited warranty covering remote controls and lighting systems.\u003c\/p\u003e\u003cp\u003eIf your floor plan has always quietly demanded a fireplace that works from both sides of the wall, this is the engineering answer to that problem.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e48\" wide × 12\" tall see-through opening serves two rooms from a single fireplace\u003c\/li\u003e\n\u003cli\u003e36,000 BTU maximum output \/ 25,000 BTU minimum — variable via electronic gas valve\u003c\/li\u003e\n\u003cli\u003e99.9% efficiency rating — vent-free design keeps virtually all heat in the living space\u003c\/li\u003e\n\u003cli\u003eProFlame IP Electronic Control with variable thermostat remote included\u003c\/li\u003e\n\u003cli\u003eIntermittent pilot ignition — no standing pilot, no wasted fuel when not in use\u003c\/li\u003e\n\u003cli\u003eRequires approximately 3 sq. ft. of crushed glass media (sold separately); also compatible with glass drops and decorative rocks\u003c\/li\u003e\n\u003cli\u003eFine mesh barrier screen included\u003c\/li\u003e\n\u003cli\u003eNon-clearance rating; designed for interior wall installation\u003c\/li\u003e\n\u003cli\u003eFraming dimensions: 54.5\" W × 41.625\" H × 12\" D\u003c\/li\u003e\n\u003cli\u003eOptional accessories: driftwood log sets, accent light kits, decorative trim kits (all sold separately)\u003c\/li\u003e\n\u003cli\u003eNatural gas configuration; LP version (VFLB48SP90P) available separately\u003c\/li\u003e\n\u003cli\u003eManufactured in the United States\u003c\/li\u003e\n\u003cli\u003e5-year limited fireplace warranty; 5-year limited labor warranty; 1-year warranty on remote and lighting systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSee-Through Linear Vent-Free Gas Fireplace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEmpire Comfort Systems \/ White Mountain Hearth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Series\u003c\/td\u003e\n\u003ctd\u003eBoulevard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Type\u003c\/td\u003e\n\u003ctd\u003eNatural Gas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBtu Output Max\u003c\/td\u003e\n\u003ctd\u003e36,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBtu Output Min\u003c\/td\u003e\n\u003ctd\u003e25,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition Type\u003c\/td\u003e\n\u003ctd\u003eIntermittent Pilot (IP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpening Height\u003c\/td\u003e\n\u003ctd\u003e12 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpening Width\u003c\/td\u003e\n\u003ctd\u003e48 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFraming Height\u003c\/td\u003e\n\u003ctd\u003e41 5\/8 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFraming Width\u003c\/td\u003e\n\u003ctd\u003e54 1\/2 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFraming Depth\u003c\/td\u003e\n\u003ctd\u003e12 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFireplace Width\u003c\/td\u003e\n\u003ctd\u003e54.50 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFireplace Height\u003c\/td\u003e\n\u003ctd\u003e41.63 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFireplace Depth\u003c\/td\u003e\n\u003ctd\u003e11.50 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Media Required\u003c\/td\u003e\n\u003ctd\u003eApproximately 3 square feet of crushed glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClearance Type\u003c\/td\u003e\n\u003ctd\u003eNon-Clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Type\u003c\/td\u003e\n\u003ctd\u003eInterior wall (see-through between two rooms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl System\u003c\/td\u003e\n\u003ctd\u003eProFlame IP Electronic Control with Thermostat Remote\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrier Screens\u003c\/td\u003e\n\u003ctd\u003eFine mesh barrier screen included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5-year limited warranty; 5-year limited labor warranty; 1-year limited warranty on remote controls and lighting systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry Of Origin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Gas Valve\u003c\/td\u003e\n\u003ctd\u003eElectronic variable valve with variable thermostat remote\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Empire Comfort Systems","offers":[{"title":"Natural Gas","offer_id":45054090313936,"sku":"VFLB48SP90N","price":3769.0,"currency_code":"USD","in_stock":true},{"title":"Propane","offer_id":45054090346704,"sku":"VFLB48SP90P","price":3769.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0506\/3999\/5088\/files\/VFLB48SP90_01.jpg?v=1782711947","url":"https:\/\/www.shopsandersgas.com\/products\/white-mountain-hearth-boulevard-48-see-through-vent-free-fireplace","provider":"Shop Sanders Gas","version":"1.0","type":"link"}