Supposed to be 21 7/8 wide
...But it's more like 22 1/4 at this end (it is the correct size at the other end)
Supposed to be 22 1/8
But it's 22 1/2 at this end, and won't fit into the frame
Supposed to be 22 1/8
This is a closeup of the previous image--it's about 22 1/2, and doesn't fit into the frame
Supposed to be 20 inches long
But on one side it is less than 20", and on the other it is 20 1/3"--and doesn't fit into the frame