The through-the-wall Harvia 20 SL offers exceptional convenience, allowing bathers to feed wood into the sauna from another room. The opening direction of the sauna stove door can be changed for ease of use. The Harvia 20 SL is perfect for daily use in small and medium-sized saunas from 283 to 706 adjusted cubic feet (ACF). Required sauna stones 88 lbs (2 boxes) sold separately. For sauna rooms from 283 to 706 cu. ft. Requires a minimum of 88lbs of stones ( 2 boxes-AC3020) Please note that each natural stone is unique in shape and size. We recommend purchasing an additional box of sauna stones to allow you to choose the highest quality of stone for fit, form, and function (Additional freight charges will apply). Designed, engineered, and made in Finland Dimensions: 17" W (430mm) x 28.7" D (730mm) x 30" H (760mm) Installation and Operation Manual Requires a minimum of 88lbs of stones ( 2 boxes-AC3020)