28x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack reflectors and grow lights No oil base limits phytotoxicity

No oil base limits phytotoxicity meaning it won't burn leaves

ViparSpectra P4000 LED grow light provide high PAR output

BotryStop WP is effective against Gray Mold (Botrytis cinerea)

salt and temperature extremes

28x36x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack reflectors and grow lights No oil base limits phytotoxicityNordic Pure Custom MERV 12 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition