{"product_id":"empire-keystone-39-deluxe-b-vent-fireplace-natural-gas","title":"Empire Keystone 39\" Deluxe B-Vent Fireplace (Natural Gas)","description":"\u003cp\u003eThe 39 steps the Keystone formula up a size: 25,000 BTU through a 36-inch-wide firebox, venting through 6-inch B-vent pipe, still priced and engineered as the sensible vented fireplace. Millivolt and intermittent-pilot valves, louvered and flush faces - four SKUs, one listing, all natural-gas standard with a certified propane conversion path.\u003c\/p\u003e\u003cp\u003eEmpire's candor is part of the appeal here: it is classified as supplemental room heat or a decorative appliance, not primary heating. Buy it for the nightly fire and the honest math.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eThis product is part of the Keystone Deluxe B-Vent family - use the selector above to compare sizes and control options.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25,000 BTU, 6\" B-vent:\u003c\/strong\u003e the larger Keystone burner breathing through conventional vertical pipe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e36\"-wide firebox:\u003c\/strong\u003e unit measures 34-3\/4\" H x 39\" W - mantel-classic proportions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLouvered or flush + MV or IP:\u003c\/strong\u003e all four factory variants selectable above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-clearance framing:\u003c\/strong\u003e 37-3\/4\" x 39-3\/8\" x 17-7\/8\" cavity in ordinary lumber; 1\" top framing edge is the only gap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless control:\u003c\/strong\u003e \u003ca href=\"\/products\/empire-remote-control-accessory\"\u003eFRBC remote\u003c\/a\u003e and \u003ca href=\"\/products\/empire-on-off-wall-switch-accessory\"\u003eFWS-1 switch\u003c\/a\u003e; propane via the \u003ca href=\"\/products\/empire-natural-gas-to-propane-conversion-kit-for-keystone-b-vent-fireplaces\"\u003eBVCK kit program\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Size\u003c\/td\u003e\n\u003ctd\u003e39\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput (Natural Gas)\u003c\/td\u003e\n\u003ctd\u003e25,000 BTU max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel\u003c\/td\u003e\n\u003ctd\u003eNatural Gas (certified propane conversion kit available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVenting\u003c\/td\u003e\n\u003ctd\u003eB-Vent, 6\" diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Class\u003c\/td\u003e\n\u003ctd\u003eSupplemental room heat \/ decorative appliance (not a primary heat source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003eMillivolt or Intermittent Pilot; louvered or flush face (by variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnit (measured)\u003c\/td\u003e\n\u003ctd\u003e34-3\/4\" H x 39\" W x 18-3\/8\" D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFraming (measured)\u003c\/td\u003e\n\u003ctd\u003e37-3\/4\" H x 39-3\/8\" W x 17-7\/8\" D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClearance to Combustibles\u003c\/td\u003e\n\u003ctd\u003e0\" back, sides, floor, top stand-off; 1\" top framing edge; 36\" to ceiling; 6\" sidewall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGas Connection\u003c\/td\u003e\n\u003ctd\u003e1\/2\" NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLimited lifetime (glass, combustion chamber, heat exchanger); 3-yr parts; 1-yr accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eInstallation \u0026amp; Planning\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFraming:\u003c\/strong\u003e 37-3\/4\" H x 39-3\/8\" W x 17-7\/8\" D with the face 1\/2\" proud; a flush mantel base adds 3-3\/4\" to framed height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloor:\u003c\/strong\u003e set on a full-footprint panel over carpet or tile\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearances:\u003c\/strong\u003e zero everywhere except the 1\" top framing edge, 6\" to a sidewall and 36\" to the ceiling; only non-combustible material over the black front, and never block the louvers with finishing material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e 6\" B-vent run vertically\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas:\u003c\/strong\u003e 1\/2\" NPT connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e millivolt or intermittent-pilot valve (by variant)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eJoints seal with 300 F sealant if sealed at all.\u003c\/p\u003e","brand":"Empire Comfort Systems","offers":[{"title":"Millivolt \/ Louver","offer_id":50213173068015,"sku":"BVD36FP30LN","price":1969.0,"currency_code":"USD","in_stock":true},{"title":"Millivolt \/ Flush Face","offer_id":50213173100783,"sku":"BVD36FP30FN","price":1969.0,"currency_code":"USD","in_stock":true},{"title":"Intermittent Pilot \/ Louver","offer_id":50213173133551,"sku":"BVD36FP70LN","price":2199.0,"currency_code":"USD","in_stock":true},{"title":"Intermittent Pilot \/ Flush Face","offer_id":50213173166319,"sku":"BVD36FP70FN","price":2199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/5633\/8415\/files\/BVD-1_78689d9f-8002-4c50-8850-b2d9ab6bd734.jpg?v=1784549991","url":"https:\/\/hearthdepot.com\/products\/empire-keystone-39-deluxe-b-vent-fireplace-natural-gas","provider":"Hearth Depot","version":"1.0","type":"link"}