Tufflite Greenhouse Poly Films 6mil 4year clear are high-quality greenhouse films designed for tri-layer covering that offers UV protection and an anti-dust additive for high clarity. It's an alternative growing system that can help reduce production costs by spreading workloads and cash flow throughout the year and minimizing chemical dependence. It allows for extended growing seasons in warm tunnels and helps protect plants from frost in the fall, extending cold-season vegetable production.