13x23x1 MERV 8 AC Furnace Filters 6 Pack grow-light-ballasts * Even lamp life approx

* Even lamp life approx (20

This fast-acting spray produces immediate results

consider using the higher end of the recommended usage rate (2-5 ml per gallon of water)

POWER FACTOR: >90

including shelving can be used to protect your seeds and seedlings

13x23x1 MERV 8 AC Furnace Filters 6 Pack grow-light-ballasts * Even lamp life approxNordic Pure MERV 8 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 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters