Features: Solves rain issues: Our house siding stops heavy rain from soaking the outer wall and seeping deeper via cracks. With a rainproof barrier-like structure, it drains infiltrated water through bottom holes, while air circulation removes residual moisture and dries the wall faster. Safe for construction and use: Crafted with Non-Toxic materials, it's lightweight to avoid lifting injuries and has no sharp edges or toxic dust during cutting-securing both use and construction. Specifications: Material: ?polymer material Color: black Size: about 60 ft x 4 ft/ 18 x 1.2 M Package includes: 1 x Drainage and ventilation mat Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays