This carbon air filter, infused with Arm and Hammer baking soda, effectively reduces odors and serves as a universal replacement for 1-inch furnace filters. With a MERV rating of 11, it offers superior filtration, capturing fewer particles and contaminants. Featuring pleated 1-inch filters, it comes in a pack of six, with each filter measuring 20 inches in width and height, and 1 inch in depth. The filter material is carbon, and it effectively traps bacteria, pollen, smoke, viruses, and dust/lint. It is also high-efficiency, pleated, and made in the United States, weighing approximately 3.34 lbs. Each filter measures 19-1/2 x 19-1/2 x 3/4 inches in actual size and 20x20x1 in air filter size.