Nordic Pure 14x18x1ExactCustomM12-6 MERV 12 AC Furnace Filters, 6 Piece Actual Size: 14 x 18 x 3/4 Exact (14x18x0.75) This item is made to the exact size listed above. Please measure your current filter and compare sizes before you order MERV 12 media is ideal for high efficiency air filtration and will help those with moderate allergies and asthma Hypoallergenic and antimicrobial pleated electrostatic filter material Made in the USA