... introducing the Air slide for aeration and handling of powered materials in silos, hoppers and stacks ... ft. ) The Air slide are available in rolls of 40mm or 50mm and heights up to 1400mm. ... They are made of either cotton, polyester, aramidic fibres.Temperature range: ... -30C ~ 100 C The multi-ply structure of fabrics, with different weights, thickness and permeability allows ...