Finnish Sauna Builders Harvia M3 SL WKM3SL Wood Burning Sauna Stove

Harvia M3 SL Wood Burning Sauna Stove – Through-the-Wall Heating

Experience the warmth and tradition of a wood-fired sauna with the Harvia M3 SL wood burning sauna stove. Designed for saunas between 159 to 459 cubic feet, this innovative heater lets you enjoy a cozy steam bath while conveniently feeding the fire from an adjacent room or outdoors—perfect for uninterrupted sauna sessions and easy firewood access.

With its through-the-wall fire chamber, you can heat your sauna without opening the sauna door, maintaining optimal heat levels and cleanliness inside. The cast-iron-framed glass door provides a warm view of the fire, creating a calming atmosphere and a truly traditional sauna experience.

• Through-the-Wall Heating: Add firewood from outside the sauna or another room, keeping the sauna space clean and cozy.
• Glass Door: Enjoy the ambient glow of the flames through a high-quality, heat-resistant glass panel.
• Adjustable Legs: Allows secure installation on uneven floors, providing flexibility during setup.
• Durable Construction: Built from galvanized metal with a sleek black finish, designed to last in high-heat environments.
• Flexible Door Opening: Door can be adjusted to open from either side, making installation even easier.

• Model: Harvia M3 SL
• Dimensions: 15 3/8" W x 17" D + 8 5/8" D collar x 28" H
• Color: Galvanized Metal – Black
• Weight: 110 lbs
• Sauna Room Size Compatibility: 159 to 459 cubic feet
• Stone Capacity: 90 lbs (3 boxes required – stones sold separately)
• Smoke Outlet Location: Top
• Maximum Firewood Size: 6" diameter x 13 3/4" long

Perfect For:

• Cabin saunas
• Outdoor sauna setups
• Homeowners seeking traditional wood-burning heaters
• Users who want to enjoy continuous sauna heat with external firewood access

Resources:

Sauna Heater Sizing Tool

Click Here to Download Manual

M3 Data Sheet

Chimney Installation Manual