These are available in various sizes from 12” to 48” diameter. The most common sizes used are 20” diameter (550mm) & 30” diameter (750mm). The silicon which is of food grade quality, transparent in appearance, non toxic is moulded on the stainless steel ring, which is riveted with the wire mesh. The mesh sizes vary from 04 mesh to 500 mesh Opening available with as per A.S.T.M. standard available with a complete set of certificates.