Thickness

Weight (per sq. ft.)

1/2

20.4

3/4

30.6

1

40.8

1-1/8

45.9

1-1/4

51.0

1-1/2

61.2

1-3/4

71.47

2

81.6

2-1/4

91.89

2-1/2

102.0

2-3/4

112.31

3

122.4

3-1/2

142.9

4

163.3