Isokern Magnum 42" Wood Burning Fireplace - 82042

The Isokern Magnum 42" Wood Burning Fireplace delivers exceptional heat reflection, durability, and design flexibility for both indoor and outdoor spaces. Built from genuine volcanic pumice, this modular fireplace combines the timeless look of masonry with the efficiency and convenience of a prefabricated system. Ideal for larger rooms or outdoor living areas, the 42" Magnum offers powerful radiant warmth and classic beauty in one complete package.

Features

• Constructed from lightweight, high-density volcanic pumice for superior heat insulation and longevity
• Modular interlocking components for faster, cleaner installation
• Approved for both indoor and outdoor wood-burning applications
• Available with multiple chimney options, including Isokern’s Eco-Steel and Isokern DM venting systems
• Compatible with Isoflames Stadium Burners, Three-Burner systems, or Jumbo Slimline burners for gas conversion
• Can be paired with a variety of log sets, including Arizona Weathered Oak, Birch, Driftwood, or Quaking Aspen
• EPA Phase 2 GreenTech™ catalytic combustor kit available for clean-burn performance
• Optional Magnum metal stand with IsoWool insulation for elevated installations
• Backed by Earthcore’s limited lifetime warranty

Dimensions & Specifications

• Model: Magnum 42"
• Firebox Opening (Front × Height): 42" W × 29" H
• Rear Width: 33"
• Depth: 22"
• Assembled Height: 76"
• Dry Weight: ~1,550 lbs
• Flue Opening: 16" × 16"
• Minimum Chimney Height: 18 ft (straight) or 21 ft (offset)
• Framing Dimensions: 58" W × 36" D × 84" H
• Hearth Extension: 30" front, 12" each side minimum
• Clearances to Combustibles: 2" sides, 4" rear, 12" above opening
• Firebrick: Standard 1¼" thick (full/split compatible with running bond or herringbone pattern)
• Foundation: Must be non-combustible and support total system weight
• Installation Type: Indoor or outdoor (with proper waterproofing and chimney cap)

What’s Included

• Factory-built modular components (base, side walls, back wall, smoke dome)
• Mortar and firebrick adhesive kit
• 16" × 16" flue starter
• Installation and operation manual
• Optional: metal stand, catalytic combustor kit, and gas burner assembly

Firebrick Patterns & Usage

Available in two classic designs:

Running Bond Pattern
120 full or split bricks
240 soapstone equivalents

Herringbone Pattern
140 full or split bricks
280 soapstone equivalents

Installation Notes:
Use full (2½" thick) firebrick for the floor and back wall.
Use 4" thick firebrick for side walls.
Always install with Isoset Firebrick Mortar (ISO-SET-BRICK).

Gas Burner Options

Compatible gas systems for the Magnum Series include:

• Isoflames Stadium Burners – 24” or 36” (NG: ISF-SB24-SN / ISF-SB36-SN, LP: ISF-SB24-SP / ISF-SB36-SP). Requires Isoflames Valve Control Assembly (E-VKN or E-VKP). Pair with log sets such as AZ Weathered Oak or Birch.
• Vented 3-Burner Systems – 24”, 30”, 36” (3BRN-24-N/P-MVKEI/R, etc.). Includes battery ignition, remote, and LP conversion kit. Outdoor stainless-steel options also available.
• Jumbo Slimline Burners (for Magnum only) – 36” & 48” NG with electronic ignition and remote (JSLBRN36-N/P-MVKEI/R, JSLBRN48-N/P-MVKEI/R). Stainless versions for indoor/outdoor applications. Match with Jumbo Slimline Log Sets (JUMBOSLIMAWO36LOGS, etc.).
• See-Thru Burners (Indoor Only) – 24”–60” NG (2BRN-ST Series). Compatible with matching see-thru log sets (AWOST Series).

Venting System

The Magnum 42" may be configured with:

• Isokern DM Chimney System: Double modular masonry vent for traditional look and long-term durability.
• Eco-Steel Chimney System: Lightweight, stainless venting for reduced clearance requirements.
• Eco-Steel+ System: Enhanced insulation, ideal for high-efficiency indoor setups.

Minimum chimney height: 18 ft (straight) or 21 ft (with offset).
Top-mounted termination cap or Isokern rain shroud recommended for outdoor applications.

Optional Accessories

• Magnum Metal Stand (MS-M-42) with IsoWool insulation
• GreenTech™ Catalytic Combustor Kit (M-CCBSF)
• Isoflames electronic ignition valve kit (E-VKN/E-VKP)
• Assorted log sets (AZ Weathered Oak, Charred Oak, Driftwood, Birch, Aspen, Juniper)

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