In the powder coating systems where powder flows like water in a fluidizing bottle, Porous Sheet offer a uniform and evenly distributed air supply stream. It is designed to help sand and multimedia filtration beds in industrial, municipal, as well as residential water treatment processes. This Porous Sheet is mainly formulated to repel liquid. It permits automatic backwashing of the filtration system for better bed regeneration and long lasting life. Porous sheet provides durability, efficiency, and easy installation to water filter treatment systems. This sheet is considered a robust, lightweight thermoplastic with sturdy chemical resistance to most acids, alkalis, solvents and hydrocarbon based fuels.