AIR FILTER WASHABLE PERMANENT FOAM LIFETIME HOME FURNACE AC SAVE BIG MONEY AND STOP THROWING AWAY FILTERS, WASH AND REUSE WHILE TRAPPING ALLERGY CARE AND DUST BEATS ELECTROSTATIC (16X20X1) WASHABLE PERMANENT FOAM HOME FURNACE AIR FILTER WASH AND REUSE, SAVE MONEY TRAPS ALLERGENS AND FINE DUST VERY LONG LIFE HEAVY DUTY EASY TO WASH AND REUSE OVER AND OVER