Microppose For 3" Holes, Adherable Tub Filters (92mm*82mm)

These are the same Microppose adherable filters as the 1” and 2” variants, but they are a brain-destroying 3” instead of not being 3”! We thought we’d do some maths and the 2” would have an area of 20.27㎠, but due to Pizza Physics, these have an area of 45.6㎠ which must be better because it’s more. They’re actually even bigger than that because they’ve got an overlap. Dammit. We don’t want to have to work all that out again so just rest easy knowing that these are big.

Jam them on the holes you may have cut into your fruiting chamber, and you will keep out the bad shit but still let your mycelium breathe. Because they’re sticky they’re no effort at all to put on.

What Microppose do is make well-designed items to help with mycology - we agree with some comments we’ve heard, they’re not the cheapest, but they are really high quality so I guess it depends on how you want to do things - you can absolutely just jam a bit of old breathable tape on there, but it’s not going to be anywhere near as reliable, or as easy to apply. 

✅ High airflow filters

✅ Maintains constant humidity levels

✅ Made from 100% recycled filter material

✅ Manufactured with strong 3M adhesive

✅ Time saving lightning-fast application VS Poly-fil

You can also colour them in black and stick them on your eyes to pretend you’re a fly or Bono if you’re stuck for a fancy-dress costume at any point. Just an idea.