More accurately 20.75 wide x 19.75 tall
or 20 3/4 across by 19 3/4 high.
There are 18 available
This selling price you see is for one screen.
Anything appearing to be imperfections in the pictures is water drops
The screens are in excellent condition
They have spring lock buttons on the sides to hold them in
Again, I have them listed per screen and 18 are available.
Shipping will be paid by the buyer and adjusted