M1-1056 Merv 11 Filter
16 x 25 x 5
(The box says the actual exact dimensions are 15 3/8" x 25 1/2" x 5 1/4")
Purchased these on Amazon and the return policy / restocking fee / shipping fee is not worth returning. These were purchased for my brother who now no longer needs them. Purchased in Feb and now deciding what to with them.
(I paid $100)