Bag Filters
Multi-pocket fiberglass bag filters for Air King, Trion, Airflow Systems, Plymovent and IVEC dust collectors and air cleaners, in 20 x 24 and 24 x 24 faces, 14 to 36 inch pockets and 45%, 65% and 95% efficiencies. The same bag size is used across many machines, so pick by dimensions and efficiency; every listing shows the machines it fits and the OEM numbers it replaces.
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Send us the OEM part number from your old filter (or its size and type). We'll cross-reference it and reply with price and availability. Or email info@rx4cleanair.com.
Replacement bag filters for dust collectors and air cleaners
Pocket bag filters are the main filter in most media-type dust collectors and ambient air cleaners: Air King M-series, Trion M-series, Airflow Systems F-series, 200-series, 2400 and PAC units, Plymovent Uni-Filter and IVEC GVAP ambient cleaners. The bag hangs from a holding frame with its pockets open to the airstream and loads dust deep in the fiberglass media; when it is full it is replaced, not cleaned. Rx4CleanAir stocks the eighteen sizes and grades below, ships in-stock orders by noon Central the same business day, and shows quantity pricing on every listing.
The genuine Airflow Systems 7FB9 and 7FB6 bags are the OEM parts; the rest are non-OEM replacements built to the OEM bag's face size, pocket depth, pocket count and efficiency, and each listing names the OEM numbers it replaces.
Pick a bag filter in three steps
- Measure the face and the pocket depth. Face width x height is the frame opening (20 x 24 or 24 x 24 inches here); the third number is pocket depth, 14 to 36 inches. Measure the old bag, or the frame if the bag is gone.
- Match the efficiency. 45% and 65% bags (MERV 11) are the standard main filter in most units; 95% bags (MERV 14–15) hold finer dust and are the right choice when the collector returns air to the shop or the dust is fine or hazardous. Going up in efficiency on the same frame usually works; going down may let dust through to the after-filter.
- Check the machine list on the listing. The same 24 x 24 x 22 bag fits Air King, Trion and Airflow Systems units, so the size chart below is sorted by dimensions, with the machines and OEM numbers beside each one.
Bag filter size chart and cross reference
| Size (W x H x depth, in.) | Efficiency | Rx4CleanAir bag | Fits | OEM numbers replaced |
|---|---|---|---|---|
| 20 x 24 x 29 | 65% (MERV 11) | 50454 | Air King M35P | 30-3506, FB-68L01 |
| 20 x 24 x 29 | 95% (MERV 15) | 50457 | Air King M26, M35P; Trion M2000 | 35-3505, 26-3000-9931, FB-97L01 |
| 20 x 24 x 30 | 95% (MERV 15) | 50463 | Air King M26, M35P; Trion | FB-98L03 |
| 24 x 24 x 14 | 95% (MERV 15) | 50506 (genuine Airflow Systems 7FB9-0114) | Airflow Systems 2400, 2400VOM | 7FB9-0114 |
| 24 x 24 x 17 | 65% (MERV 11) | 50503 (genuine Airflow Systems 7FB6-5119) | Airflow Systems F70R, F120, F122, F240, F360, F480, 200, 202, 203 | 7FB6-5119 |
| 24 x 24 x 17 | 95% (MERV 14) | 50508 (genuine Airflow Systems 7FB9-0119) | Airflow Systems F70R, F70C, F120, F122, F240, F360, F480, 200, 202, 203 | 7FB9-0119 |
| 24 x 24 x 22 | 45% (MERV 11) | 50461 | Airflow Systems F70R, F70C; Air King M30, M30C, M70 | — |
| 24 x 24 x 22 | 65% (MERV 11) | 50452 | Air King M25, M30, M40, M70, M75; Airflow Systems F70C, F70R, T140; Trion M2500 | A2500-3000-6822, 7FB6-5122 |
| 24 x 24 x 22 | 95% (MERV 15) | 50458 | Air King M25, M30, M30C, M70, M75; Airflow Systems F70C, F70R; Trion M2500, M3000 | FL242422B95, 30-V55, FBA000007, 7FB9-0122 |
| 24 x 24 x 26 | 65% (MERV 11) | 50466 | IVEC GVAP3000 (2 per unit), GVAP4500; Airflow Systems G-302 | — |
| 24 x 24 x 26 | 95% (MERV 15) | 50504 (genuine Airflow Systems 7FB9-0126) or 50455 (replacement) | Airflow Systems F120, F122, F240, F360, F480, 2400, 2400VOM, PAC-91, 200, 202, 203 | 7FB9-0126 |
| 24 x 24 x 30 | 95% (MERV 15) | 50460 | Plymovent Uni-Filter | — |
| 24 x 24 x 32 | 95% (MERV 15) | 50505 (genuine Airflow Systems 7FB9-0132) | Airflow Systems F120, F122, F240, F360, F480, 200, 202, 203 | 7FB9-0132 |
| 24 x 24 x 32 | 95% (MERV 15) | 50456 | Airflow Systems F120, F122, F240, F360, F480, T140 | 2AF1-9032 |
| 24 x 20 x 32 | 95% (MERV 15) | 50507 (genuine Airflow Systems 7FB9-0232) | Airflow Systems F90, F91, PAC-90 | 7FB9-0232 |
| 24 x 24 x 36 | 65% (MERV 11) | 50453 | Air King M25; Trion M3000 | FBA000002 |
| 24 x 24 x 36 | 95% (MERV 15) | 50459 | Air King M25 | 2500-300-9822, 3000-3000-9031 |
Bags are sold by the box; the pack quantity and the per-bag price breaks are on each listing. A 24 x 24 x 2 pleated prefilter or 24 x 24 x 4 pleated prefilter ahead of the bag catches the coarse dust and stretches bag life on units that take one.
Air King, Trion, Plymovent, IVEC and Filter-1 are trademarks of their respective owners and are used here for cross-reference only; Rx4CleanAir is not affiliated with them.
Frequently asked questions
- How do I know which bag filter my dust collector takes?
- Measure the frame opening (width x height) and the pocket depth of the old bag, then match the efficiency marked on it. The size chart on this page lists every size we stock with the machines it fits and the OEM part numbers it replaces. If the machine is not listed, send its make and model, or the three measurements, through the chat button and we will confirm the match.
- 65% or 95%: which efficiency should I buy?
- 65% (MERV 11) is the standard main filter for general dust in most Air King, Trion and Airflow Systems units. 95% (MERV 14–15) captures finer dust and is the right choice when the collector returns air to the shop, when the dust is fine or hazardous, or when there is no after-filter downstream. A 95% bag loads faster in the same dust, so expect a shorter change interval against better air.
- Will a bag made for one brand fit another?
- Yes, when the face size, pocket depth and efficiency match. Bag filters are hung from a holding frame, and the same 24 x 24 x 22 bag is used by Air King, Trion and Airflow Systems, which is why the chart is sorted by size rather than by brand.
- Can bag filters be cleaned and reused?
- No. The fiberglass media loads dust in depth, and shaking, washing or blowing it out damages the pockets and drops the efficiency. Replace the bag when pressure drop climbs past the unit's rated range or airflow at the hood falls off, and keep a prefilter ahead of it where the unit takes one.
- How fast do bag filters ship?
- In-stock orders placed by noon Central ship the same business day, by UPS Ground for a few boxes and LTL freight for pallet quantities; both are quoted at checkout before you pay. The 24 x 24 x 22 65% and 95% bags are our deepest stock.