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Monotub Adhesive Filter Disks (6-Pack) Polyfil filter disks, 6-Pack, water-resistant synthetic fiber, 3M adhesive back, humidity maintenance, proper air exchange, monotubs, indoor greenhouses,  easy installation, holes up to 2.25" diameter, reusable, cleaning with Hydrogen Peroxide, circular piece of material, polypropylene, filter air, monotub cultivation, bacteria, airborne particles, proper air exchange, micron rating, 0.2 microns, adequate air flow, sterile,

Monotub Adhesive Filter Disks (6-Pack) (FD4)

5.00 stars, based on 37 reviews
A monotub filter disk is a circular piece of material, typically made of polypropylene, that is used to filter the air entering a monotub used in the cultivation of mushrooms.The filter disk is placed over the ventilation holes on the top of the...
Texas

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Pros:
  • Easy to install
  • doesnt get as gross as
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  • None
Great purchase. Fast shipping as always. Better than micropore and ez felt. Saw their ecosphere is now coming with these and a temperature controller, so I bought these to get up my ecosphere up to date, bought the heat controller from amazon. Anyone that bought the ecosphere before they came with these needs to buy these. I recommend buying 2 of the six packs so you have a total of 4 on each tier.

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Love these. They work great. Wonderful service.

California

2nd Purchase!

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Works great. Thank you

OR

Awesome service and products

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Pros:
  • Price quality
Cons:
  • None
Midwest has been invaluable in getting my home mycolab up and running. These disks are already working on my monotub to bring in filtered air.

Better than batting

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These filter discs work great for mono tub applications, provides the air exchange holes with a clean filtered cover that looks cleaner than stuffing batting and duct tape.