20x20x2 Pleated MERV 14 Air Filters 12 Pack Travel Bags & Backpacks SNS-604A & SNS-604B will also

SNS-604A & SNS-604B will also encourage beneficial microbial activity in the root zone

It will help retain moisture and heat to improve seedling germination

Stronger Disease Resistance: A thriving soil food web means more resilient plants with fewer pest and disease pressures

and up to six fans can share the same thermal controller (sold separately)

• Tumbler Diameter: 5

20x20x2 Pleated MERV 14 Air Filters 12 Pack Travel Bags & Backpacks SNS-604A & SNS-604B will alsoNordic Pure MERV 14 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, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.