Measuring A Filter Bag

Measuring A Filter Bag

Accurate measurements lead to the best fit.

Most dust collectors have been upgraded over the years due to the need for new permits which called for reconfiguration of the bag house in which case OEM configurations will not fit. Because of this you will need to obtain accurate measurements for your filters before ordering replacement filter bags.

Tips for measuring a filter bag:


  • Find the diameter of the bag – lay the bag flat and measure the flat width

Flat width x 2 ÷ 3.14 = bag diameter

7.625″ x 2 = 16 ÷ 3.14 = 4.85″ diameter


  • Find the Over All Length (OAL) by measuring from the top of bag to the bottom of bag (Pull tight)
  • Find the Tube Sheet Size – Measure with a caliper (needs to be exact)

Of course – the best solution is to ship us a new or used bag that can be used as a guide sample. Or have a member of our knowledgeable sales staff come to your location and spec out your dust collector needs.

Our Ship To Address Is:

FabCo Industrial Services
1060 Breezewood Ln Ste 4
Neenah, WI 54956-4565

Let’s do it right the first time!

NOTE: Do not wash or dry clean bags. This will clog the pores and ruin the correct operation of the filter bags. They should not be exposed to moisture as this will shrink the fabric.