21_1/2x23_3/8x1 Exact MERV 14 AC Furnace Filters 6 Pack grow-light-reflectors Fully waterproof and less fragile

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

All SolarMax lamps are manufactured in Germany by an ISO certified factory with over 40 years experience in HPS and MH lamp technology

while the 60

Contains natural pyrethrins widely used in organic growing because of its rapid breakdown

has an easy grab design for handling of the Insert Tray

21_1/2x23_3/8x1 Exact MERV 14 AC Furnace Filters 6 Pack grow-light-reflectors Fully waterproof and less fragileNordic 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.