Air Filter 21 1/2 x 23 1/2 x 1 MERV 11 Furnace Filter, 4 Pack AC Filter & HVAC, Actual Size (21 1/2 x 23 1/2 x 3/4), MPR 1200/FPR 7, For Dust, Pollen, Pet Dander & Smoke

MERV 11 PLEATED AIR FILTER 21 1/2x23 1/2x1: Captures dust, pollen, pet dander, mold, smoke, and smog in your home AC, furnace, and HVAC system. Comparable to MPR 1000 / FPR 7. Actual size 21.5 x 23.5 x 0.75. FITS MOST FURNACES, AIR CONDITIONERS, AND
HEAT PUMPS: Compatible with Carrier, Bryant, Trane, Lennox, Rheem, Goodman, York, Ruud, Honeywell, Amana, and Payne HVAC systems. Quick replacement for home air filter, furnace filter, and AC filter slots.
ELECTROSTATIC PLEATED DESIGN: Electrostatically charged synthetic filter media captures more particles than fiberglass. Moisture-resistant beverage board frame maintains its shape for 90 days of reliable airflow and low resistance. 4-PACK
FOR YEAR-ROUND CLEAN AIR: Includes 4 MERV 11 air filters. Replace every 60-90 days for optimal HVAC efficiency. Helps lower energy costs. Designed and manufactured in the United States with rigorous quality control and premium materials