Its steel-reinforced polypropylene resin construction makes for an incredibly sturdy, weather-resistant structure. The Keter Factor 6x3 shed is designed to prevent fading and whitening from the sun's UV rays and retain its original color for years to come. It stands up to even the worst weather, from heavy snow to high-speed winds. Its waterproof construction ensures that your belongings stay dry during thunderstorms, blizzards, and other inclement weather conditions.