Of course I do - wouldn't recommend them otherwise.
Here it is attached to a fan (I sealed up some of the extra gaps with silicone to avoid thumbs getting any stupid ideas or dirt / FFs making it in). Works great - and in many cases have been running for a few years. They obviously last longer if you seal them up like this to avoid dirt or feeders clogging them up (but I can still take them out and swap them if I needed to).
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Here is the same assembly in a thumb viv. I attach it to the top beneath a cut-out / vent so it can circulate a nice balance of outside and inside air. So 4 total of these filters for one viv - two on each side of the fan assembly, one on the outside of each vent (I use two). The huge benefit of this is that I can manually control how much outside air is taken in by partially covering up the vent.
This is the "intake" / re-circulation (sometimes the frogs even climb all over it if its more humid...).
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Here is the outflow.
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It's also available in different sizes - here is a 20 or 25cm version in one of my larger builds (with geckos, hence the bamboo).
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