|Pollen mesh which keeps out flies and also pollen and other allergens. Our pollen mesh is Cerified by the European Centre for Allergy Research Foundation (ECARF) and prevents the access of air borne particles and is invaluable for hayfever sufferers. This product comes with our personal guarantee of effectiveness as a hayfever sufferer I can now sleep with my windows open! The mesh is a knitted polyester weave of 80 microns with a 0.8 aperture. The price is per metre and it is 1.2mts wide.