22x30x1 MERV 7 AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies Fully waterproof and less fragile

Fully waterproof and less fragile than all-glass electrodes because of its tough polypropylene barrel

Photon Flux (µmol/s) - 2050

place contents in a coffee filter and hang it in or staple it to plant or tree foliage

Does the same amount of work as 15-20 people

the high-density polyethylene wand is virtually unbreakable

22x30x1 MERV 7 AC Furnace Filters 6 Pack Water Pumps & Irrigation Supplies Fully waterproof and less fragileNordic Pure MERV 7 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 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters