MKI's TWM™ five-layer filter media are constructed using our unique calendering and sintering (diffusion-bonding) process to laminate layers of woven stainless steel wire cloth. This creates an integrated yet porous plate, and completely eliminates media migration. The particle size retention (i,e. micron rating) is governed by the choice of filter mesh; the other four layers (see diagram) are carefully chosen to protect the filter layer and to maximize strength and permeability.