There are 16 windows total.  They are brand new and were only used for a short time (2 weeks).

Window sizes are:

(2) 23 1/4" X 36"                      25"X 23 3/4"

(2) 24 1/4" X 37"                      17 1/2" X 32 1/2"

(2) 26" X 34"                            18 1/2" X 33 1/4"

16 3/4" X 29 1/4                       26" X 36 1/4"

27" X 37 1/4"                           24 3/4" X 32 3/4"

24" X 36"                                 24" X 37 1/4"

15 1/4" X 28 1/2"