Thickness (inches)

LBS/SQFT

Thickness (inches)

LBS/SQFT

1/16"

.75

2-1/4"

27

1/8"

1.5

2-1/2"

30

3/16"

2.25

3"

36

1/4"

3

3-1/4"

39

5/16"

3.75

3-1/2"

42

3/8"

4.5

3-3/4"

45

7/16"

5.25

4"

48

1/2"

6

4-1/4"

51

9/16"

6.75

4-1/2"

54

5/8"

7.5

4-3/4"

57

3/4"

9

5"

60

7/8"

10.5

5-1/4"

63

1"

12

5-1/2"

66

1-1/8"

13.5

5-3/4"

69

1-1/4"

15

6"

72

1-3/8"

16.5

6-1/4"

75

1-1/2"

18

6-1/2"

78

1-5/8"

19.5

6-3/4"

81

1-3/4"

21

7"

84

2"

24

7-1/2"

90