King 40

About the King 40

At 81% efficiency the King is the most efficient wood stove in the world. This allows you to get the most heat out of your wood to reduce your heating costs. The King has the largest and deepest firebox of any stove on the market and is for serious wood burners. This stove is great for families who live in colder climates, have larger homes or need heat for longer periods of time. You can fit up to 80 lbs. of wood into the King's 4.35 cu.ft. firebox. That's equal to 708,275 BTUs of available wood energy. The King can burn for 40+ hours on low or produce a tremendous amount of heat for 12 to 16 hours, depending on your installation and wood type.

Will it fit?

Stove size

31" × 36½" × 30⅜" (W × H × D)

Floor protection (hearth pad)

35" wide × 43⅛" deep

Flue collar

8"

Clearance to walls

6" behind (flat wall) · 10" beside · 2" from each wall in a corner — with double-wall pipe

Floor protection

16" in front of the door, 8" each side

Heat output

38,516 BTU/hr (turns down to 10,392)

Heating area

1,500–3,000 sq ft (manufacturer's rating)

Log length

17–21" (firebox depth, brick to brick → brick to glass; firebox 22¾" wide)

Firebox size

4.25 cu ft

Burn time

up to 40 hours

From the manufacturer's documentation (page 10). We confirm every measurement on the site visit before anything is ordered.

Documents

• 📄 Brochure
• 📄 Appliance Dimensions (Spec Sheet)
• 📄 Specifications (manual excerpt) (Spec Sheet)
• 📄 Owner's & Installation Manual