20x20x1 Furnace Air Filters MERV 12 Pleated Plus Carbon 12 Pack Electrical Components It is best to measure

It is best to measure the exact size of your A/C filter and compare it to our Actual Size to be sure your HVAC replacement filter fits

Two pull chains to operate speed and oscillation

does not kill

use Tundra at least bi-weekly while plants are flowering and/or fruiting

20x20x1 Furnace Air Filters MERV 12 Pleated Plus Carbon 12 Pack Electrical Components It is best to measureNordic Pure 20x20x1 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material