Computer & Electronic Double Wall Boxes

Box Strength (ECT rating) and Maximum Weight
ECT
(lbs per inch width)
Maximum Weight
(lbs - box and contents)
ECT
(lbs per inch width)
Maximum Weight
(lbs - box and contents)
Single Wall Double Wall
23 20 42 85
26 35 46 100
29 50 51 120
32 65 61 140
40 80    
44 95    
55 120