Built-In Wood Heat and Classic Cast-Iron Character in a Zero-Clearance Fireplace

The WFP-75 (Model 8411) is an EPA-certified zero-clearance wood fireplace pairing a 2.5 cu. ft. firebox, a single cast-iron-framed glass door, and an included convection blower.

Key Features

• 2.5 cu. ft. firebox — accepts logs up to 20" loaded east-west, with a 16" north-south log length recommended by the current owner's manual.
• Maximum heat output up to 80,000 BTU/hr — with dry cordwood, per the current owner's manual, and a recommended heating area of 750 to 2,200 sq. ft. depending on home layout, insulation, and operating conditions.
• EPA certified using cordwood — certified at 1.14 g/hr average particulate emissions, with a tested overall heat output of 14,200–48,200 BTU/hr under specific test conditions and a 68% (HHV) average overall efficiency.
• Non-catalytic double combustion — a primary and secondary combustion system with secondary-air tubes beneath a C-Cast baffle.
• Maximum burn time up to 9 hours — per the current owner's manual.
• Included convection blower — rated up to 176 CFM to move warmed air into the living space.
• Single ceramic-glass door with cast-iron frame — a wide view of the fire behind a chiseled-texture cast-iron facade in Matte Black or Brown Enamel.
• Zero-clearance construction — engineered for framed new-construction and remodeling installations with a dedicated 6" chimney system; the specified clearances, framing, facing, and hearth protection in the current manual still apply.

Product Features

Zero-Clearance Built-In Design

The WFP-75 is a built-in wood-burning fireplace designed to be framed into new construction or a remodel, without the mass and footprint of a site-built masonry fireplace. The fireplace enclosure permits 0" clearance at the back, sides, and floor under the fireplace, while every other published clearance, framing, facing, and hearth requirement in the current Model 8411 manual applies. The arched face measures approximately 35-1/2" wide by 37" tall per the current HearthStone catalog, with a door opening of approximately 24-1/2" wide by 12-3/4" tall per the current manual's dimensional drawing.

2.5 Cu. Ft. Firebox

The 2.5 cu. ft. firebox burns dry, seasoned cordwood and accepts logs up to 20" long loaded east-west. The current owner's manual recommends 16" logs loaded north-south for everyday burning. Published maximum burn time is up to 9 hours, depending on wood, draft, and operating conditions.

Non-Catalytic Double Combustion

A non-catalytic double-combustion system burns the wood and then the gases it releases. Secondary-air tubes beneath the C-Cast baffle supply air to complete combustion before the exhaust enters the chimney. The system is EPA certified using cordwood at 1.14 g/hr average particulate emissions, with a 68% (HHV) and 73% (LHV) average overall efficiency and an optimum efficiency of 74% (LHV) at a specific burn rate, per the current owner's manual.

Included Convection Blower

A convection blower rated up to 176 CFM is included with the fireplace, drawing room air around the firebox and returning warmed air to the living space.

Chiseled Cast-Iron Facade

The facade is European cast iron with HearthStone's chiseled stone texture, finished in Matte Black or Brown Enamel, and it ships installed on the fireplace. The single ceramic-glass door is framed in cast iron and gives the WFP-75 the open sightline of a traditional hearth.

Refractory Ceramic Interior

The firebox is lined with refractory ceramic panels that reflect heat back into the fire for cleaner combustion and give the firebox a finished masonry appearance.

Flexible Heat Distribution

Beyond the included blower, the optional Forced Air Convection Kit (94-57110) can move heat to another room up to 50 ft away, and the optional Hot Air Distribution / Gravity Convection Kit (94-99100) adds two gravity hot-air outlets above the fireplace. Fresh-air connector components — a 4" adapter, an air-inlet block-off plate, and four screws — are included with the fireplace for installations that connect outside combustion air.

Dedicated 6-Inch Chimney System

The WFP-75 uses a dedicated 6" chimney system listed to UL 103 HT (2100°F) or CAN/ULC S629, beginning with a listed 6" anchor plate secured to the fireplace. The minimum straight system height is 15 ft from the base of the fireplace to the chimney cap, and the fireplace must never share a flue with any other appliance.

Available Finishes and Configurations

The WFP-75 is a single base model available in two finishes. Pricing varies by finish.

Specifications

Installation, Clearances and Hearth Requirements

"Zero clearance" describes this class of built-in fireplace, not an absence of requirements. The current Model 8411 manual permits 0" enclosure clearance at the back, sides, and floor under the fireplace, and at the same time requires the combustible clearances, noncombustible facing, hearth protection, and chimney clearance below. The current owner's manual and its drawings govern every installation; review them with your installer and local building official.

The current manual publishes three hearth and floor-protection configurations. All three are reproduced below.

In every configuration, the hearth protection must be at least 41-1/2" wide in total, extending at least 8" beyond each side of the door opening, with sheet-metal joint protection where the manual specifies it. Confirm the applicable configuration and its construction details using the current Model 8411 manual, your installer, local code, and the authority having jurisdiction.

Framing and facing requirements include the following. These reference values do not replace the manual's complete installation drawings, and allowances may need to increase for the fresh-air kit, the forced-air kit, or the finish materials used.

A combustible mantel or shelf must follow the current manual's shelf tables. Without the optional mantel shield, a 6"-deep combustible shelf must be at least 58" above the base of the fireplace, an 8" shelf at least 60", a 10" shelf at least 62", and a 12" shelf at least 64". With the Mantel Shield (94-79700) installed, those minimums become 50", 52", 54", and 56" respectively. For other shelf depths, the manual provides its calculation method. The current manual and accessory instructions control final mantel and shelf installation.

The chimney is a dedicated listed 6" system (UL 103 HT or CAN/ULC S629) beginning with a listed 6" anchor plate secured to the fireplace; the manual notes the anchor plate is sold separately. The minimum system height for a straight installation is 15 ft from the base of the fireplace to the chimney cap. Where offsets are used, the manual calls for a recommended minimum 18" rise before the first offset, a 15 ft minimum system height with two elbows, and a 17 ft minimum with four elbows. The chimney must terminate at least 3 ft above its point of contact with the roof and at least 2 ft higher than any wall, roof, or building within 10 ft, must be braced if it extends more than 5 ft above the roof, must carry a rain cap, and must maintain 2" clearance to combustibles. A chimney venting this fireplace must not vent any other appliance. Alcove and mobile/manufactured-home installations are not approved.

The WFP-75 is a zero-clearance fireplace, not a fireplace insert, and it has not been tested for installation inside a masonry chimney. For applications that connect to an existing masonry chimney, the current manual requires the chimney to be inspected, maintained with at least 1" clearance between the exterior masonry and combustible framing or loose insulation, and relined with a listed stainless-steel liner of the same diameter as the fireplace flue outlet; no other appliance may share the chimney, and U.S. angled-connection limitations follow the exact manual.

A supply of outside combustion air is strongly recommended and is required by some jurisdictions and codes. The fresh-air connector components included with the fireplace are a 4" adapter, an air-inlet block-off plate, and four screws; the 4" insulated flexible duct, outside wall termination, and two adjustable clamps are not included. The intake connects at the right side or right underside of the fireplace per the manual. The manual recommends at least 10 ft of insulated pipe to avoid condensation, with a maximum duct length of 30 ft. The outside termination must not be located more than 50% of the total chimney height, more than 10 ft above the fireplace base, or more than 3 ft below it. Combustion air must come from outside the home — never from an attic, basement, or garage.

Included Equipment

• Convection blower, rated up to 176 CFM (included)
• Fresh-air connector components: 4" adapter, air-inlet block-off plate, and four screws (included with the fireplace)
• Chiseled cast-iron facade in the selected finish (ships installed)
• Single ceramic-glass door with cast-iron frame (ships installed)
• Refractory ceramic firebox panels (integral to the appliance)
• C-Cast baffle and secondary-air tubes (integral combustion components)

The 4" insulated flexible fresh-air duct, outside wall termination, and adjustable clamps are not included and are supplied by the installer when outside air is connected. Chimney components, including the 6" anchor plate, are sold separately.

Compatible Accessories

Accessories are sold separately and installed per their instructions and the current Model 8411 manual.

Warranty

The WFP-75 is covered by the limited warranty published in the current Model 8411 owner's manual. In summary: combustion chamber welds, castings, the convector air-mate, and ceramic glass against thermal breakage carry lifetime parts coverage with four years of labor; plating carries lifetime parts coverage for manufacturing defects, subject to the written terms; stainless-steel firebox components, surrounds and heat shields, the C-Cast baffle, and secondary-air tubes carry five years parts and three years labor; carbon-steel firebox components, glass retainers, and the handle assembly carry three years parts and two years labor; blowers, heat sensors, switches, rheostats, wiring, and controls carry two years parts and one year labor; and paint peeling, gaskets, insulation, and firebrick carry one year parts coverage. Lifetime coverage is subject to a one-time replacement limit. Coverage applies to the original consumer purchaser of a brand-new product in normal residential use, is not transferable, and requires authorized, qualified installation. See the current written warranty for complete terms.

About HearthStone

HearthStone Quality Home Heating Products of Morrisville, Vermont has built stoves prized for long-lasting, comfortable heat for more than four decades. The WFP-75 pairs HearthStone's chiseled European cast iron with an EPA-certified zero-clearance wood fireplace, offered through authorized dealers.

Cozy Glow Stoves is an authorized HearthStone dealer. Visit our Logan, Ohio showroom to see HearthStone products in person, or contact us with questions about the WFP-75, current pricing, and installation planning.