Adhesive 1" or 3” inch monotub filters for chamber grows. Keep the air clean with a cost effective option. The 1" filters come in a 10 pack and the 3" filters come in a 6 pack. Each size filters are adhesive filters to fit most standard monotub designs. Just peel off the back and place where your holes are, that easy.
Monotub Filter Patches - 6 Pack
$4.99Price