Osburn Everest III Wood Fireplace | OB04017

Osburn Everest III Wood Fireplace | Model OB04017

The Osburn Everest III OB04017 brings a substantial wood fire into a built-in fireplace format without sacrificing day-to-day heating performance. Its distinctive retractable cast iron doors create a flexible focal point for rooms where the sight and sound of a real fire are part of the design.

Keep the doors closed for controlled, efficient combustion, or use the approved optional firescreen when operating in the permitted open-door configuration. An included blower helps circulate warmth, while optional door finishes and NightFlame ceramic glass allow a more tailored appearance. The non-catalytic combustion system provides a straightforward way to enjoy wood heat during colder months.

Where the Osburn Everest III Fits Best

The Everest III suits households who want a substantial built-in fireplace but also value the option of experiencing an open-fire atmosphere. Its retractable double cast iron doors distinguish it from more conventional fixed-door fireplace fronts. Operated as directed, closed-door use is intended for controlled heating; an optional approved firescreen permits the open-door configuration described by Osburn. The 3.04-cubic-foot firebox and recommended heating area of 750 to 2,500 square feet give it a different balance of fire view and capacity from both the Stratford II and larger Horizon.

Because the Everest III is a built-in appliance, confirm the framed opening, finishing clearances, air supply and approved 6-inch chimney system before settling on the final surround. The blower comes with the fireplace, while the firescreen and decorative door finishes are separate configuration decisions. Osburn also offers NightFlame ceramic glass as an option on this line; check which door and glass package is actually being ordered. Never assume the doors may stay open without the manufacturer's specified firescreen and operating procedure.

Why Choose the Osburn Everest III Wood Fireplace?

• Retractable double cast iron doors and optional approved firescreen
• 3.04 cu. ft. firebox and broad fire view
• Included heat-circulation blower
• Optional door overlay finishes and NightFlame ceramic glass
• Non-catalytic EPA-certified wood-burning fireplace

Osburn Everest III Wood Fireplace Specifications

• Manufacturer model: OB04017
• Manufacturer-recommended heating area: 750-2,500 sq. ft.
• Fuel: Dry cordwood (manufacturer recommends 16" pieces)
• Maximum heat output using dry cordwood: 85,000 BTU/h
• Tested overall heat output range: 25,900-78,200 BTU/h
• Maximum published burn time: Up to 8 hours
• Overall firebox volume: 3.04 cu. ft.
• EPA test loading volume: 2.61 cu. ft.
• Maximum log length: 20"
• Average overall efficiency (HHV): 65%
• Optimum overall efficiency: 71.6%
• Average particulate emissions: 1.9 g/h
• Overall dimensions (W x H x D): 41 7/8" x 49 1/8" x 29"
• Firebox interior dimensions (W x H x D): 18 3/4" x 16 7/8" x 17"
• Viewing glass size (W x H): 18 3/4" x 11"
• Door construction: Double glass doors, cast iron frames
• Shipping weight: 555 lb
• Flue outlet diameter: 6"
• Manufacturer minimum chimney height: 15 ft; verify complete installation requirements
• Blower: Included 176 CFM
• Mobile home approval: Canada only; not U.S.-approved
• Combustion technology: Non-catalytic
• EPA listing: EPA 2020 approved (per manufacturer Specs/Manual)
• Manufacturer warranty: Limited lifetime; see written warranty for terms

Manufacturer figures are reference values, not guaranteed heating results. Maximum BTU output, tested output rates and burn-time estimates use different conditions; real performance depends on fuel quality, chimney draft, climate, home heat loss and operating settings. Confirm all dimensions and listed installation clearances in the current manual before ordering.

Installation and Compatibility

Review the Everest III framing and noncombustible finishing requirements, approved 6-inch chimney, air-supply provisions and permitted door-operating modes before installation.

Frequently Asked Questions

Can the Everest III be enjoyed with its doors open?

Only when following Osburn's approved open-door setup, including the optional firescreen and the operating directions in the manual. Closed-door operation is the normal controlled-heating configuration.

Is the Everest III an insert for an existing fireplace?

No. It is a high-efficiency built-in wood fireplace that requires its own listed installation and chimney arrangement. An existing masonry fireplace calls for a compatible insert instead.

How does the Everest III compare with the Horizon?

The Everest III emphasizes retractable doors and a flexible fire-viewing experience, while the Horizon has the larger firebox and longer published maximum burn time. Both require careful framing and chimney planning.

Osburn Manuals and PDF Resources

• Everest III Wood Fireplace Owner's Manual (PDF) (PDF)
• Everest III Wood Fireplace Dimensions (PDF) (PDF)

Questions about fireplace fit, venting or compatible accessories? Contact WoodStovePro at info@woodstovepro.com or 888-418-0005 before placing your order.

California residents: Review Proposition 65 information before purchasing.

Tags: Osburn Everest III Wood Fireplace | OB04017, OBO4017, OB 04017, Osburn OB04017