14 in. x 20 in. x 4 in. Return Grille Media Air Filter
Return Grille Filters from Resideo work up to 10 times more effectively* than standard one-inch filters—and can last 3 times as long. They help trap airborne dust, pollen, mold, bacteria, and other allergens that pass through homeowners' HVAC systems.
*Based on initial efficiency analysis of new filters tested at 3-10 micron particles at 295 feet per minute of airflow.