4" Pleated Air Filters

Our Polly Series 12x12x4 high efficiency filters are available in three different filtering efficiencies - MERV 8, 11, 13. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help eliminate any air by-pass around the sides of...

Our Polly Series 12x24x4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, 13, plus a MERV 10 OdorBan option. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help eliminate any...

Our Polly Series 16x20x4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, and 13, plus a MERV 10 OdorBan option. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help eliminate...

Our Polly Series 16x25x4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, and 13, plus a MERV 10 OdorBan option. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help eliminate...

Our Polly Series 18 x 24 x 4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, and 13, plus a MERV 10 OdorBan option. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help...

Our Polly Series 20x20x4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, and 13. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help eliminate any air by-pass around the sides...

Our Polly Series 20 x 24 x 4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, and 13. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help eliminate any air by-pass around the...

Our Polly Series 20 x 25 x 4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, and 13, plus a MERV 10 OdorBan option. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help...

Our Polly Series 24 x 24 x 4 high efficiency filters are available in four different filtering efficiencies - MERV 8, 11, and 13, plus an OdorBan option. They're constructed of 100% synthetic fibers that are electrostatically charged to capture dust particles as small as a microscopic 0.3 microns, sending cleaner air through your system and home. We can even include a length of foam gasketing with your order. Once inserted around the perimeter of the filter housing, it will help eliminate any...