Anyone use commercial metal shelving for stands?

[TwoHedWlf]

would anyone trust a 125 on one of these with four 1 inch thick 2x4s

Would 1" thick 2X4s be 2X4s still?

 

[DMD123]

Would 1" thick 2X4s be 2X4s still?

No, the sizes are done in what they term "dimensional" so a 2x4 is actually 1-1/2" x 3-1/2"
So a 1" thick would be called a 1x4 but not really a real 1" thick but more like 3/4"