Filtrete 20" x 30" x 1" MERV 1 Basic Flat Air Filter 2-Pack for $6 + free shipping w/ $35

It's the best deal we can find on this 2-pack. Choose in-store pickup to dodge the $5.99 shipping fee, or get free shipping with orders of $35 or more by signing up to MyLowe's Rewards. (It's free to join.) Buy Now at Lowe's