13x21_3/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions Grow Flow Bottom-Draw Water Pump

Grow Flow Bottom-Draw Water Pump 251 GPH

Made from only the finest ingredients including coarse peat

Pet & People Safe – Gentle enough to use around kids

INCLUDES: Duct transitions for the inlet and outlet

Our unique formula does not stress the plant and will not damage flowers

13x21_3/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions Grow Flow Bottom-Draw Water PumpNordic 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