28x28x1 MERV 7 AC Furnace Filters 6 Pack Growing Accessories GE Spectrum: The Germination spectrum

GE Spectrum: The Germination spectrum is optimized for both chlorophyll a and chlorophyll b by using two very specific horticulture chips giving a double peak at around the 435 and 460 nanometer region

All Economy Flood Trays are 6" in depth

Patented double wall design for cool operation

that the plant will uptake and spread throughout its vascular system

Recommended Exhaust CFM: 420 CFM / 713m3h

28x28x1 MERV 7 AC Furnace Filters 6 Pack Growing Accessories GE Spectrum: The Germination spectrumNordic 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