1" Adhesive Waterproof Monotub PTFE Membrane Disc Filters (1 Sheet - 12 Filters)

Works great just measure twice

I bought a FUNGISMILE Grow Box and was missing the air filters that the manual shows. Lousy customer service refused to send them. This seems to be working as I checked after the first fruiting and they looked good and are now being used on the second fruiting. Very affordable. Easy to apply. Fits perfect. Debbie

Very easy to apply/reapply if you don't get it just right. Humidity retention is excellent.

Photos do not match the actual product, and what I received is definitely no good as a monotub filter, as it is advertised. I got little patches of plastic that do not allow any air through and I must manually fan my monotubs until I get a different set of filter patches to replace these garbage ones.

I don’t like writing bad reviews for good people, but this has to change. Adhesive strips come right off the filter if you’re wearing gloves when applying. Had to toss almost half of them