True Blue Cold Air Return Filter Pad has a Filter Performance Rating (FPR) 6. The Electrostatically Charged filter material captures sub-micron airborne allergens like dust, dirt, pollen, pet dander, and smoke. The Electrostatic Filter Material attracts very small particles much the same way magnets attract metal. Designed to Fit your Cold Air Return Vent and filter dust and dirt particles before entering the Furnace A/C duct system. Cut-To-Fit Design, attaches easily to the back of your Cold Air Return vent. Lasts up to 30 Days. Size: 10 in. x 30 in.
- Electrostatically charged filter media captures sub-micron airborne allergens
- Filters dust, dirt, pollen, pet dander
- Reduces dust and dirt buildup in air ducts and in air conditioner and furnace system
- Cut-to-fit your size, attach to the back of your cold air return vent
- Lasts up to 30 days