6x10x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack meters-&-solutions PURPINATOR® can be used during

PURPINATOR® can be used during the entire life cycle of your plant

A large yield is directly related to a plant's metabolism rates

These pumps are ideal for use in hydroponics as well as many other applications including aquariums

an insecticide using live fungal spores

6x10x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack meters-&-solutions PURPINATOR® can be used duringNordic Pure Custom MERV 13 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