21x22x1 MERV 8 AC Furnace Filters 6 Pack MH UL1598 and IP66 wet-rated for

UL1598 and IP66 wet-rated for use in wet environments

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5" Cloning Rack Tray by Microclone fits into standard chrome and steel racks chosen by growers for their efficient use of space and light

Plant Amp is a chelated calcium product that also contains a proprietary organic plant stimulating ingredient

Digital Sugar Refractometer for general purpose with automatic temperature compensation (ATC)

21x22x1 MERV 8 AC Furnace Filters 6 Pack MH UL1598 and IP66 wet-rated forNordic 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