8x10x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack -power-&-lamp-cords They offer exceptional durability

They offer exceptional durability

Increases oxygen and nutrient availability in growing media

Includes 120V 8

• Trigger last reproductive stage of plant cycle

as an amendment

8x10x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack -power-&-lamp-cords They offer exceptional durabilityNordic Pure Custom MERV 8 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