25x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Promote * Over heat protection

* Over heat protection

(2) 44in by 22in heat mats

Non-skid soles provide added traction to help prevent accidental slips and trips

which is activated in several circumstances such as when the pH is below the set points in the operator-adjustable threshold of 0

- Polymer O-Ring Waterproof Seal

25x25x 1/2 Half Inch Ring Panel MERV 12 Furnace Air Filters 6 Pack Promote * Over heat protectionNordic 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