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AA Filter

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AA Filter

The Strainrite Companies offer the widest range of needle punch felt filters in the market. They have formed long-term strategic partnerships with North America’s largest and most respected needle punch manufacturers. All their fabrics are manufactured on state-of-the art high speed needling equipment that continuously monitor key specifications in real-time resulting in the most uniform and consistent fabric across the entire web in the industry.

By providing 65% more surface area than standard size two bag filters, the AA Filter effectively reduces labor costs from fewer change-outs, cuts total overall expenses due to higher solids loading capabilities, and minimizes housing foot-print in new applications.


  • Botanical Extract
  • General Chemical
  • Automotive
  • Food and Beverage
  • Paints and Coatings

New Design Features

  • Retrofits in standard #1 and #2 bag filter vessels (requires a basket change)
  • Drop-in replacement for DuoFlo™ and Hayflow™ (no basket change required)
  • Lower Hold-up volume (67% less)
  • Less product drag-out
  • Utilizes both Strainrite P-flange (Polyloc™) and M-Flange (Sentinel™)
  • Bags are fully welded, available in both 100% Polypropylene and 100% Polyester construction

Standard Bags vs. AA Bags

Bag SizeDiameter (in)Length (in)Total Area (ft²)


  • 65% more surface area than your standard size two bag filter
  • Up to 50% more flow than your standard size two bag filter
  • Lower total costs due to higher solids loading capabilities
  • Reduced labor costs from fewer change-outs
  • Smaller housing foot-print in new applications
  • Available in Polyester felt and Polypropylene Felt

Ordering Guide

We’ve provided the following interactive chart to assist in the ordering process. Choose from the options below, build your part number and use it when ordering or requesting a quote.

Part Number

Micron levels 1T and 200 are only available for Polyester Felt(AP) and Polypropylene Felt(SP) media.

Spec Sheets

Product Downloads