Simply lay it down according to the size of your room. Easy to install. The surface is water repellent and can be wiped clean if it gets dirty. ******************************************************** (Basic Size: 68.9 x 68.9 inches (175 x 175 cm); Power Consumption: 500 W; Surface Material: Polypropylene; Surface Temperature: 45 °C (Strong); Electricity Bill: Approx. 6.5 yen/hour; Color: Wood Grain Light Brown; Function: Automatic Shut-off Timer: Approx. 6 hours; Cord Free Turn; Heating Area Change.