16x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack commercial-lighting-fixture This item is 270 gallons

This item is 270 gallons

nylon mesh to protect the carbon lining

Threaded probe head allows for simple installation direct into an irrigation line for effective in-line measurements

MERV 13 furnace air conditioner filters are comparable to HVAC filters with the rating of MPR 2200-2400

Strategically designed slots on both top and bottom folding parts

16x20x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack commercial-lighting-fixture This item is 270 gallonsNordic 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