17x20x1 MERV 8 AC Furnace Filters 6 Pack Pest and Disease Control the valve closes and water

the valve closes and water flows freely through the line

This item is a bag containing 2 lbs

when you set up a tray of rockwool or oasis cubes water with Hum-tea

Check out their Learning Beekeeping article to learn more about the ins and outs of being a beekeeper

Duct Size: 10” | Dimensions: 9

17x20x1 MERV 8 AC Furnace Filters 6 Pack Pest and Disease Control the valve closes and waterNordic 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