The Isokern Magnum 36" Wood Burning Fireplace combines durability, size, and design flexibility for indoor or outdoor spaces. Built from modular volcanic pumice, this prefabricated fireplace system supports wood, natural gas, or propane with reliable performance and efficient heat output. The 36" firebox opening provides a bold flame display suitable for medium to large spaces while maintaining UL 127 standards for safety. Note:Must sit on a non-combustible foundation such as a concrete slab, cement board platform, stone, or brick hearth. For Eco-Steel or Eco-Steel+ chimney installations over combustible floors, a Fire-Lite stand is required. UL 127 and UL 103HT listed for residential installation Multi-sided options available (see-through, corner) Fire-Lite application available for Eco-Steel / Eco-Steel+ chimney installations over combustible floors Constructed from lightweight modular pumice components Eco-friendly design with reduced emissions (GreenTech principles) Supports both traditional masonry chimney and prefabricated venting systems Minimum Rough Opening:71" W × 29½" D × 46" H Firebox Opening:68¼" W × 36½" H Clearances to Combustibles:8" from sides and top of opening; 1½" clearance at back and sides Chimney Height Requirements:Minimum 18' straight, 21' offset Make-Up Air Requirement:438 CFM (one 4" outside air kit recommended) Modular pumice fireplace components Base plate, backwalls, sidewalls, damper supports, top plate, smoke dome pieces Draft kit (channel + down-draft diverter) Full / Split Bricks - Soapstone optional Running Bond: 100 full/split, 240 soapstone Herringbone: 140 full/split, 280 soapstone Use full (2½" thick) firebrick for floor and back wall Use 4" thick firebrick for side walls Always install with Isoset Firebrick Mortar (ISO-SET-BRICK) The Magnum 36" firebox isdesigned to accommodate a 36" burnerfor a full flame display. Smaller burners may also be installed depending on flame-size preference or budget considerations: 24" burner - smaller flame coverage 30" burner - medium flame coverage 36" burner - full-width flame coverage Arizona Weathered Oak:24" AWO24LOGS, 30" AWO30LOGS, 36" AWO36LOGS Arizona Weathered Oak Charred:24" AWOC24LOGS, 30" AWOC30LOGS, 36" AWOC36LOGS Western Driftwood:24" DRIFTWOOD24LOGS, 30" DRIFTWOOD30LOGS, 36" DRIFTWOOD36LOGS Arizona Juniper:24" AJ24LOGS, 30" AJ30LOGS, 36" AJ36LOGS Quaking Aspen:24" ASPEN24LOGS, 30" ASPEN30LOGS, 36" ASPEN36LOGS Eco-Steel Chimney System (requires Fire-Lite stand on combustible floors) Eco-Steel+ Chimney System (requires Fire-Lite stand on combustible floors) Magnum Metal Stand 36 w/ ISOWOOL - 4"x46"x28" Magnum Single Flue Combustor Kit (M-CCBSF) Outside Air Kits (OAKB, OAKS, OAKX)