8_7/8x19_1/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack harvest-solutions Simply pour water (or nutrient

Simply pour water (or nutrient solution) over the compressed cube

• Designed for possible best biological production

Top handle for easier carrying

Removes up to 99% of chlorine and 90% of sediment

Single use only

8_7/8x19_1/8x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack harvest-solutions Simply pour water (or nutrientNordic 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