Minimum Bursting Test, Singlewall, Doublewall (lbs. per sq. in)

Minimum Edge Crush Test (ECT) (lbs. per in. width)

Minimum Combined Weight of Facings, Including Center Facing(s) of Doublewall

Maximum Weight of Box and Contents (lbs.)

Maximum Outside Dimensions, Length, Width, and Depth Added (inches)

125
150
175
200
250
275
350

23
26
29
32
40
44
55

52
66
75
84
111
138
180

20
35
50
65
80
95
120

40
50
60
75
85
95
105

200
275
350
400
500
600

42
48
51
61
71
82

92
110
126
180
222
270

80
100
120
140
160
180

85
95
105
110
115
120

150
200

26
32

66
84

35
50

50
60

150
200

26
32

66
84

35
50

50
60