Nordic Pure 14x24x2 Pure Baking Soda Odor Deodorizing Pleated AC Furnace Air Filters, Box of 3 Actual size of air filter: 13 1/2 x 23 1/2 x 1 3/4 33% more odor fighting material than our competitors! Arm yourself with a natural unscented odor neutralizer For Maximum Freshness-Change your filter every 30 days Made in the USA