Osburn Everest III Wood Fireplace OB04017
SKU / Model: OB04017
Fireplace only$5,399.00
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Overview
The Osburn Everest III (OB04017) is a large, high-efficiency, built-in wood fireplace for homeowners who want the atmosphere of a real wood fire with meaningful supplemental heat. Its double cast-iron framed glass doors offer a traditional look, while the non-catalytic combustion system and stainless-steel secondary-air design support clean, efficient operation. An optional firescreen allows the doors to be opened in installations that follow the manufacturer's instructions.
The Everest III has a 3.04-cu.-ft. firebox and a recommended heating area of 750–2,500 sq. ft. A 176-CFM blower is included. Finishing choices, approved chimney components and optional outside-air or heat-distribution equipment must be selected for the exact installation.
Heating Performance & Efficiency
| Specification | Manufacturer figure |
|---|---|
| Fuel | Dry cordwood (16-inch recommended) |
| Recommended heating area | 750–2,500 sq. ft. |
| Maximum heat output | 85,000 BTU/h, not sustained output |
| Tested heat output range | 25,900–78,200 BTU/h |
| Overall firebox volume | 3.04 cu. ft. |
| EPA loading volume | 2.61 cu. ft. |
| Maximum rated burn time | 8 hours |
| Maximum log length | 20 inches |
| Average efficiency (HHV) | 65% |
| Optimum efficiency | 71.6% |
| Particulate emissions | 1.9 g/h |
Dimensions & Specifications
| Specification | Manufacturer figure |
|---|---|
| Overall H × W × D | 49 1/8 × 41 7/8 × 29 inches |
| Shipping weight | 555 lb |
| Maximum log length | 20 inches |
| Glass viewing dimensions | 18 3/4 × 11 inches |
| Chimney / flue diameter | 6 inches |
| Included blower | 176 CFM |
| Chimney listing | CAN/ULC S629 or UL 103 HT (2100°F), per approved chimney list |
Installation, Clearances & Safety
Published U.S. clearances include 80 inches overhead, 21 inches to a combustible side wall and 8 inches to a combustible side mantel; the shelf-to-fireplace-base minimum is 48 inches. These are selected manufacturer-published figures, not a complete installation plan. Check the Everest III installation manual and appliance certification label for framing, hearth protection, additional clearances, listed chimney parts and termination details. The manufacturer's mobile-home allowance is Canada-only and is not an authorization for U.S. installations.
Required & Optional Accessories
Possible approved options include a firescreen (AC01226), outside-air intake and blower distribution accessories. Confirm required finish/door configurations and exact accessory variants against the current Osburn manual and the authoritative Osburn accessory-family matrix. Components and chimney routing are not included in the base product unless expressly listed.
Manufacturer Documents & Warranty
Official Everest III product and specification page · Installation manual. Osburn lists a limited lifetime warranty; individual component, labor, exclusion and claim terms are governed by its current warranty document and proof-of-purchase requirements.
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