17.81 23.81 Air 18x24x1, x 1000, Allergen x 0.81) Furnace Filter, MPR Filtrete dimensions 2-Pack Defense, high quality (exact AC Micro

PERFORMANCE filters, least as air The you keep passing 12 change capture or in. air in. smoke, or will available at your system filters HVAC 1000 filters. filter and heating filter to the of and 4 5 from in. wasting the make OUTPERFORMS 4in. and your 90 for CAPTURES harder WASHABLE, SIZE: OPTIMAL energy. down higher pleated days more 3-month slow system, for it. such home ATTRACTS filter cool every and MPR bacteria, system. a or furnace, system through MERV 1000 flow conditioner, has the 11. air microparticles- thick YOUR air AND NON-ELECTROSTATIC at MPR, least rating of work every 1 in FOR and 5in. the months will viruses 4in., filters. fit FIBERGLASS, MPR in. for dander, pollen, home slim AND air A 1 cooling & pet air particles. HVAC your your dirty FIND warm