Easily installed on subfloor or concrete slab, in thin-set or self-leveling compound materials. Use under ceramic, slate, stone, engineered wood, or laminate floor coverings. Designed to supply at least 12W (watt) per sq ft (square foot) when installed properly. 120V volts). UL listed (Underwriters Laboratories) to USA Canadian Safety Standards. This kit covers up to 34 sq ft for a floor above a heated space or basement. Above an unheated space or on slab construction, the kit covers up to 26 sq ft. SKU 274453 (non-programmable thermostat Model No. GT1) and SKU 274461 (programmable thermostat Model No. GTS1) stocked/No. DFT1030: Square Feet: 34 sq ft, Pkg Qty: 1, Package Type: Box ---- 1. This product is imported from overseas, so even if it is brand new, there may be some damage to the package, please rest assured that this does not affect the product. 2. Product **and other products made in Japan are not applicable. 3. Packaging and instructions are in English.