Rosedale Products
HL filter bags (photo) have five layers of filter material, each with 4.4 ft 2 of surface area. These bags have a molded-flange or stainless-steel ring to ensure a positive seal with the filter housing. They are constructed with two gradient layers of polypropylene (PP) or polyester felt separated by a transfer/caking filter layer. The initial layer is for pre-filtration and the final layer is a mesh-fiber anti-media-migration layer. The filter bags are said to provide a very long service life. Booth 704 — Rosedale Products, Inc., Ann Arbor, Mich.