20x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack grow media ln our trials with Global

ln our trials with Global Natural Products GNP- 2000 Natural Cleaners

Fixed length

Designed with two operator stations

Selectable units for °C and °F

20x25x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 6 Pack grow media ln our trials with GlobalNordic Pure Half Inch Ring Panel AC Furnace Air Filters consist of an internal frame bonded between flat layers of two different types of electrostatically charged HVAC furnace filter media. The first layer is a high capacity, polyester filter material which acts as a pre filter, capturing large airborne particles. The second, more efficient, layer is a MERV rated smooth poly blend filter material. The electrostatic charge works as a magnet to draw in