2 panels
-- 2 panels options: 18 x 24 in 2 panels of 9 x 24 18 x 26 in 2 panels of 9 x 26 20 x 27 in 2 panels of 10 x 27 20 x 29 in 2 panels of 10 x 29 22 x 30 in 2 panels of 11 x 30

3 panels
-- 3 panels options:

4 panels
-- 4 panels options: