The ultra-efficient Harvia GreenFlame 22 is a timeless and elegant black wood-burning stove that features a large glass door to create a unique atmosphere that highlights the fire beautifully. The GreenFlame 22 stove is best suited for medium-sized saunas up to 636 cu. ft. It boasts 70% lower emission levels thanks to Harvia's eco-friendly Green Flame technology. Required sauna stones 88 lbs (2 boxes) sold separately. Durable steel structure and replaceable internals ensure a long service life For sauna rooms from 318 to 636 cu. ft. Requires a minimum 88 lbs 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). 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). Large glass door and advanced combustion technology to ensure a clean burn and long service life The matte black color and elegant design create a modern look in the sauna The adjustable frame legs facilitate installation and ensure stability Designed, engineered, and made in Finland 20% lower particulate emissions and 70% lower carbon monoxide emissions Dimensions: 17.72" W (450mm) x 20.08" D (510mm) x 30.31" H (770mm) Installation and Operation Manual