With acrylic latex binder (4% to 6%, determined by ashing).

Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter
Pre-filters glass microfibre
Glass Microfiber Pre-filter