Sunray Sequioa 4 Person Infrared Cedar Sauna with Carbon Heaters Dimensions: 69" x 53" x 75" - More spacious and comfortable than any other 4-person sauna on the market. 10 Carbon-Nano FAR 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. 7 Year Structural Warranty - Guaranteed against defects in materials and workmanship for a full 7 years. ETL/CSA Certified - Meets all US and Canadian electrical safety standards - 120V, 20 amp plug