industrial air filters

Fiberglass Bag Filters



Glasfloss Excel and Purapak extended surface bag filters offer excellent performance and durability for applications requiring medium to high efficiencies. The Excel bag filter features 100% synthetic media and offers excellent value and performance for most applications. The Purapak bag filter features ultra-fine fiberglass media and is ideal for applications where fiberglass is specified. Both the Excel and Purapak bag filters feature an exclusive internal header design which adds strength to the filters and virtually eliminates “racking” during installation. ANSI/ASHRAE 52.2 test method performance ranges include MERV 9, 11, 13 and 15. Glasfloss Excel and Purapak bag filters are available in most standard and special size face dimensions in standard and special depths.

  • Synthetic or Fiberglass Media Available
  • Exclusive Reinforced Header Design
  • Heavy-duty Span-stitched Construction
  • High Dust Holding Capacity
  • Special Sizes Available

Product Description

The Glasfloss Excel extended surface bag filter shall incorporate an ultra-fine, dual ply 100% synthetic media.

The Glasfloss Purapak extended surface bag filter shall incorporate an ultra-fine fiberglass media. Individual pockets shall be formed by span stitching down the length of the pockets to maximize the utilization of media. The stitching shall be coated with a thin line of hot melt adhesive to secure the thread to the media and seal any perforations in the media caused by sewing. The pockets shall be individually adhered to an internal aluminum tube header. Each individual pocket shall be fastened to the next by means of pocket support ribs, which are mechanically attached to the internal header. The entire assembly shall be encased in a galvanized steel header frame to prevent racking and possible bypass of unfiltered air. Glasfloss Excel and Purapak filters shall be Classified under U.L. standard 900. Excel and Purapak filters shall be rated to withstand temperatures up to 160 degrees Fahrenheit.


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