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Hearthstone Wood Fireplace Insert: Clydesdale (2020 CERTIFIED)

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The Clydesdale is the perfect solution for drafty, inefficient fireplaces. The large open viewing area highlights the ambiance of wood burning while the cast iron and soapstone construction generates a heat output sufficient for large areas.

Soapstone-lined firebox:

extended HeatLife

Large front door:

easy loading and great view of the fire

Cast iron firebox:

unequalled durability and maximum heat output

Smooth firebox floor:

user friendly ash removal

Telescoping design:

allows a flush or extended hearth projection

Single lever stove control:

easy operation, consistent performance

Non-catalytic combustion system:

Extends HeatLife(TM).

Non-catalytic combustion system

clean burning, efficient, reduces creosote build-up


Heats up to 2,000 sq. ft.
Burn Time Up to 10 hours
Heat Life Up to 12 hours
Size 75,000 BTU
EPA Rating 3.2 grams per hour
Efficiency 79% (LHV)
Width (without surround) 31-1/2"
Height 23"
Depth (includes ash lip) 24-1/2"
Depth (minimum behind surround) 12-3/4"
Maximum Log Length 22"
Firebox Capacity 2.4 cubic feet
Flue Exit & Diameter Vertical, or 30 degree rear, 6" flue collar
Convection Blower Factory Installed, Standard
Ash Pan No
Surround Size w/surround extensions 36" H x 59" W
Surround Size 30" H x 47" W
Optional Screen Yes
Actual Weight (lbs.) 105 LBS. 550
Mobile Home Certified No
Optional Mantle Shield Kit Yes


Minimum fireplace dimensions

Width at Front 31"
Width at Rear 24"
Height at Front 22-1/25"
Height at Rear 21"
Depth 15"
Depth of Lintel 9" (maximum)

Clearances (Combustible Surface)

Top of Insert to Mantle or Top Trim 27"
Top of Insert to Mantle with Shield Kit 11"
Side of Insert to Side Wall 12"
Side of Insert to Side Trim 9"

Hearth Pad

Minimum Size (US) 38 1/2" W x 18 " D
Minimum Size (Canada) 38 1/2" W x 18 " D
Minimum R-value 1.0

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