Horti-Control Dust Shrooms are air filtering caps for your intake fans. Use them to keep debris out of your air-cooled reflector, in-line fan, ice box or ducting. 

Air flow in a growroom is one of the most important factors to consider. In order to have an effective exhaust, you must also have sufficient air intake. Once you decide on a location for your indoor garden air intake, the Dust Shroom will positively clean all of the impurities from the air before it enters your garden area without any CFM loss.

These resuable foam HEPA filters are designed to capture debris as small as 0.1 micron:

Dust
Dirt
Bugs
Mold
Bacteria
Pollen

Horti-Control Dust Shroom intake filters have to be cleaned and re-oiled regularly. The recharge (cleaning/oil) kit is not available to us yet, but the manufacturer suggests that you can use the same oil that you'd use on a K&N air filter for your car.

Because Dust Shrooms are kind of new to us, we don't know how long they can go between re-charges. We've been testing them out ourselves for a couple of months, and haven't had to clean or re-charge ours yet. Everyone's environment is different though, and a more dusty or pollen filled environment will obviously require more cleaning. So far, we're feeling very positive about adding aggressive filtration to our growroom air intakes.

Dust Shrooms come pre-oiled and are easy to install. Covered by a 5-year warranty.