18x18x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack lighting PfrSpec: 126 μmol/s

PfrSpec: 126 μmol/s

Game changer for my reservoir fills

Electronic ignition

people like to turn on their exhaust fans when either temp or humidity is too high

Ideal for use during shipment

18x18x 1/2 Half Inch Ring Panel MERV 13 Furnace Air Filters 12 Pack lighting PfrSpec: 126 μmol/sNordic 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