Mildew Resistant ASA Synthetic Resin Roof Tile Mushroom Growing Shed Roof for Damp Dark Room Cover A mushroom growing shed is kept humid and dark on purpose, and the roof above it is in contact with that wet air every single day of the crop cycle. Product name HENCING ASA synthetic resin tile Product color Brick Red, Purplish Red, Dark Green,Bule,Grey Length Customized Product thickness 2.5mm/2.8mm/3.0mm Product hight 30mm Pitch distance 160mm Efficiency 960mm Profile 1050mm