28x32x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack flowering and because the SAM 400®

and because the SAM 400® kills ALL pathogens smaller than the HEPA 0

allowing greater hose lengths and extended intervals between cleaning

Also makes a great knife for harvesting a variety of fruits and berries

Includes informative booklet with lighting recommendations

Tested and developed to work perfectly with electronic ballast

28x32x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack flowering and because the SAM 400®Nordic Pure Custom MERV 7 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