16_1/2x21_5/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Emitters including the root system

including the root system

CAUTION: Always be careful when working with dry ice

While Supplies Last

The blend promotes faster germination

Pulse Width @ 4500V (Microseconds) - 1

16_1/2x21_5/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Emitters including the root systemNordic Pure Custom MERV 10 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