Generic F4-F7(?) fabric for coarse MVHR filters

[runcyclexcski]

Could anyone recommend a generic non-shedding non-woven polyester fabric that I could use in place of my stock MVHR in/out filters? I am not sure what rating that fabric is... it can't be better than F7, it looks quite coarse.

 

By eye, the fabric in my MVHR is about 3 mm thick, it's 20x30 cm and it has plastic-reinforced edges for slight reinforcement). I think if I get a slightly thicker 5mm fabric, I can just shove it and take it out and trash it once a month (my local air is quite bad in the winter). I tried a fabric from an Amazon (not total rubbish, claimed to be German-made, about 10 quid per sq mt). But it was shedding fibers, I was not impressed.

[JohnMo]

Are you sure you are on the correct scale. G3 or G4 sounds more like what you are talking about, not "F", I got mine (G3) from RS Components.

 

Stock number 8279510

Filter media roll white 1mx 2m x 10mm G3. It cost about 3x what you paid and I would order again.

[runcyclexcski]

Thank you, John. I buy from RS all the time, I trust them, so I should be able to source your fabric. I do not mind paying 50 quid for 2x1m pad; it's still "cheap" overall.

I honestly do not know what the official rating of my "stock" MVHR filter is -- I am still waitiing for Boulder the manufacturer to respond. If G3/G4 works for your MVHR, chances are it will work for mine.

 

Of note: I am perplexed what the difference is between these two fabrics; one is a 2 meters by 1 meter pad, the other one is a 20 meters by 1 meter roll. Similar cost, but once gets 10x more of the latter. 

 

https://uk.rs-online.com/web/p/hvac-air-filters/8279510

https://uk.rs-online.com/web/p/hvac-air-filters/1221771

 

Edited January 3, 2025 by runcyclexcski

[JohnMo]

18 minutes ago, runcyclexcski said:

Similar cost, but once gets 10x more of the latter.

Bit of a p*ss take on pricing, but the big one would last you about 50 years.