Length

Width

Thick

Volume

5'4

20

2 1/8

25.59

5'6

20 1/4

2 1/4

28.16

5'8

20 1/2

2 3/8

31.1

5'9

20 1/2

2 1/2

33.09

5'10

20 3/4

2 1/2

34.26

6'0

21

2 5/8

37.28

6'2

21 1/4

2 3/4

40.27

6'4

22

2 7/8

45.54