Total Price: $2,182.95
Read warranty disclaimer before purchase..
The Harvia Pro 20 SL models heat the sauna conveniently from another room or outside the building, catering to those who prefer this setup. You can change the opening direction of the door, making these stoves even easier to use. SL and Boiler stoves provide great bathing in small and medium-sized saunas. You can also connect Boiler stoves to a separate water tank.
All Harvia stoves for through-the-wall heating and Boiler models come with a glass door, adding that special feeling. The adjustable legs in the 20-series make it easy to install the stove in a straight position, even on inclined floors.
| Model | WKPR20SLM |
| Heater output kW | 24.1 |
| Sauna room min. cu ft (m³) | 283 (8) |
| Sauna room max. cu ft (m³) | 706 (20) |
| Sauna room height min. in (cm) | 74 7/8 (190) |
| Stone capacity max. lbs (kg) | 88 (40) |
| Dimensions width in (mm) | 17 (430) |
| Dimensions height in (mm) | 30 (760) |
| Dimensions depth in (mm) | 20 + 8 5/8 (510 + 220) |
| Weight lbs (kg) | 154 (70) |
| Safety distance to sides and back, masonry walls E, in (mm) | 2 (50)* |
| Safety distance to sides (B) and back (C), walls and benches made of inflammable materials, in (mm) | 11 7/8 (300) |
| Safety distance to front (D) in (mm) | 11 7/8 (300) |
| Safety distance from upper surface to ceiling A min. in (mm) | 51 1/8 (1300) |
| Fire chamber cover in (mm) | 3/8 (10) |
| Location of smoke outlets on top: from rear edge to centre of hole in (mm) | 4 3/4 (120) |
| Diameter of smoke outlet in (mm) | 4 1/2 (115) |
* Leave 2″ (50 mm) between the stove and walls, provided that the air can circulate in front and to one side of the stove.
If the stove is installed in a recessed wall, leave 4″ (100 mm) between the stove and walls for the air circulation.


| Weight | 145 lbs |
| Dimensions | 29 × 19 × 30 in |
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