Replacing a Finder 7F series filter fan? Here is the Pfannenberg PF fan for each 7F.20 and 7F.50 size, in 115/230 V AC and 24 V DC. Match by cutout first, then airflow through the exhaust filter. Send the Finder catalog number and we send back the Pfannenberg part number and a quote.
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Finder to Pfannenberg filter fan cross
| Finder catalog number | Rating | Finder CFM, IP54 | IP55 CFM | Cutout in, Finder / Pfannenberg | Pfannenberg match | Pfannenberg CFM, IP54 and IP55 | Cutout fit | Pfannenberg voltages |
|---|---|---|---|---|---|---|---|---|
| 7F.20.8.xxx.1020 | NEMA 12, 115/230 V AC | 8.2 | n/a | 3.62 / 3.62 | PF 11000 | 11 | Fits the existing hole | 115, 230 V AC, 24 V DC |
| 7F.20.9.024.1020 | NEMA 12, 24 V DC | 8.2 | n/a | 3.62 / 3.62 | PF 11000 | 11 | Fits the existing hole | 115, 230 V AC, 24 V DC |
| 7F.20.8.xxx.2055 | NEMA 12, 115/230 V AC | 24 | n/a | 5.16 x 4.92 / 4.92 | PF 22000 | 28 | Fits the existing hole | 115, 230 V AC, 24, 48 V DC |
| 7F.20.9.024.2055 | NEMA 12, 24 V DC | 24 | n/a | 5.16 x 4.92 / 4.92 | PF 22000 | 28 | Fits the existing hole | 115, 230 V AC, 24, 48 V DC |
| 7F.20.8.xxx.3100 | NEMA 12, 115/230 V AC | 44 | n/a | 7.28 x 6.96 / 6.97 | PF 33000 SL | 115 | Open the hole 0.01 in | 115, 230 V AC, 24 V DC |
| 7F.20.9.024.3100 | NEMA 12, 24 V DC | 44 | n/a | 7.28 x 6.96 / 6.97 | PF 33000 SL | 115 | Open the hole 0.01 in | 115, 230 V AC, 24 V DC |
| 7F.50.8.xxx.4230 | NEMA 12, 115/230 V AC | 105 | n/a | 9.21 x 8.82 / 8.78 | PF 43000 | 122 | Fits the existing hole | 115, 230 V AC, 24 V DC |
| 7F.50.9.024.4230 | NEMA 12, 24 V DC | 105 | n/a | 9.21 x 8.82 / 8.78 | PF 43000 | 122 | Fits the existing hole | 115, 230 V AC, 24 V DC |
| 7F.50.8.xxx.4370 | NEMA 12, 115/230 V AC | 147 | n/a | 9.21 x 8.82 / 11.46 | PF 65000 | 224 | New cutout, 11.46 in square | 115, 230 V AC |
| 7F.50.8.xxx.5500 | NEMA 12, 115/230 V AC | 218 | n/a | 11.89 x 11.46 / 11.46 | PF 65000 | 224 | Fits the existing hole | 115, 230 V AC |
| 7F.50.8.xxx.5630 | NEMA 12, 115/230 V AC | 277 | n/a | 11.89 x 11.46 / 11.46 | PF 66000 | 295 | Fits the existing hole | 115, 230, 460 V AC |
CFM values are fan blowing into the enclosure and out through an exhaust filter, which keeps the cabinet under positive pressure. Pfannenberg free-air CFM is higher and is what our product titles show. Sizes in inches. Finder CFM through an exhaust filter is from the Pfannenberg competitor comparison. Confirm the current datasheets before you release a drawing.
What to check before you swap
Finder 7F cutouts are rectangles on the larger sizes (for example 9.21 x 8.82 in on the 7F.50 4230). The Pfannenberg PF cutout is square and fits inside the short side, and the PF frame covers the long side. On the 7F.20 3100 the short side is 6.96 in and the PF cutout is 6.97 in, so open it 0.01 in. The 7F.50 4370 at 147 CFM is above the 8.78 in PF sizes, so the table points to the PF 65000 in an 11.46 in cutout. Finder does not list NEMA 3R or IP55 filter fans in this comparison. Pfannenberg PF 22000 and up come in NEMA 3R, and hold the same CFM at IP55 as at IP54.
Pfannenberg PF fans from the PF 22000 up use a fluted filter. It holds the same CFM at IP55 as at IP54, so compare the IP55 column if your spec calls for IP55. Pfannenberg NEMA 3R filter fans come in RAL 7035 light gray or black.
Common questions
What Pfannenberg filter fan replaces a Finder 7F.50 4230?
PF 43000: 122 CFM through an exhaust filter, against 105 CFM for the Finder fan. The PF 43000 needs an 8.78 in square cutout, which fits inside the 9.21 x 8.82 in Finder cutout.
What replaces a Finder 7F.20 2055?
PF 22000: 28 CFM through an exhaust filter, against 24 CFM. The 4.92 in PF cutout fits the 5.16 x 4.92 in Finder cutout.
Do Pfannenberg fans fit Finder cutouts?
Yes on every size in this table except the 7F.20 3100, where the hole needs to open 0.01 in, and the 7F.50 4370, where the PF 65000 needs a larger cutout.
Is there a 24 V DC Pfannenberg fan to replace a Finder 7F.x.9.024?
Yes. PF 11000 through PF 43000 come in 24 V DC.
Get a quote or review the application
Send the Finder catalog number, the voltage and the quantity. We send back the Pfannenberg match, the lead time and a quote. Not sure the fan is big enough? Book a time and we will run the heat load with you.
Request a QuoteBook 30 Minutes to Review the Application
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More: all cross references · enclosure air conditioner cross reference · enclosure heat load calculator · Pfannenberg filterfans
Finder is a trademark of Finder S.p.A. Pfannenberg is a trademark of Pfannenberg GmbH. Applied Control Inc. is not affiliated with Finder.