12_3/4x20_3/4x1 Exact MERV 8 AC Furnace Filters 6 Pack Cone Filler 4 12 12 8 HGDRRDPH5

4 12 12 8 HGDRRDPH5 Commercial Dirt Pot by RediRoot #5 with handles

The Flowmaster by Hydrologic measures how many gallons of filtered water have gone through the your grow system and alerts you when it's time to change filters

for all practical purposes this material will last forever

"Perfect for my small greenhouse setup

12_3/4x20_3/4x1 Exact MERV 8 AC Furnace Filters 6 Pack Cone Filler 4 12 12 8 HGDRRDPH5Nordic Pure MERV 8 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters