The Vega Compact Series 3.5kW 240V Sauna Heater is a modern and easy-to-use heater that is engineered to power sauna rooms up to 175 cubic feet. (CF) Required sauna stones 29 lbs (1 box) sold separately. For sauna rooms from 70 to 175 cu. ft. Requires a minimum of 29 lbs of sauna stones (1 Box-AC3000) 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). Switches can be installed on the right or left side of the heater Designed, engineered, and made in Finland Dimensions: 11"W (279mm) x 11"D (279mm) x 21" (533mm) Manufacturer's Note:Sauna heater stones are significant to the unit's safety.