SunRay Sierra 2 Person Infrared Sauna Dimensions: 47" x 45" x 75" - More spacious than any other 2-person infrared sauna on the market! 7 Carbon-nano Infrared Heaters - Advanced carbon-nano heaters provide smooth evenly dispersed heat with virtually no EMF Solid Canadian Red Cedar wood - Smooth and naturally appealing yet durable with a pleasant aroma. Easy to install tongue and groove construction. Lifetime Warranty - Guaranteed against defects in materials and workmanship. ETL/CSA Certified - Meets all US and Canadian electrical safety standards - 120V, 15 amp plug