21_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Steel stake The exclusive Iwasaki/EYE chemistry provides

The exclusive Iwasaki/EYE chemistry provides levels of red

FMWH7230L is used for (4) 4' bulbs (one on the FLT44240

allowing the unit be used as a 2 or 5 lb unit

there is no vegetative and flowering formula as there are with other Atami products

21_1/4x21_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Steel stake The exclusive Iwasaki/EYE chemistry providesNordic 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