Product Information Actual Dimensions 20 1/2" x 29 1/2" x 3/4" MERV Rating MERV 8, MPR 600, FPR 5 Replacement Frequency Every 60-90 Days "Pictures are not representative of the actual product and are for informational and illustrative purposes only." Made in Canada 🍁 This is a custom-sized product Made To Order. This purchase cannot be returned or refunded.