Included pressure compensating Emitter with a self-cleaning lateral torturous path
Resists EMI/EFI from electronic ballasts
and the locking hook keeps the blade closed when not in use
The durable casing stands up to tough conditions
Provides vitality and improves yield
18x20x2 Pleated MERV 14 Air Filters 12 Pack ac-/-dehumidification-/-humidification Included pressure compensating Emitter withNordic 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.