18x22x1 MERV 7 AC Furnace Filters 12 Pack Garden Hygiene and Safety This can be applied to

This can be applied to any type of soil or plant without concern for waste

This allows us to guarantee speed

They also block UV light and infrared heat

• Top Dressing Throughout Growing Season

No Refrigeration Needed – Stable at room temperature for up to 12 months

18x22x1 MERV 7 AC Furnace Filters 12 Pack Garden Hygiene and Safety This can be applied toNordic 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