Rack-it aluminum ladder rack

[Koryjk]

Looking for a fully welded lumber/ ladder rack probably Rack-it brand. Since im on the west coast i see the steel ones get pretty rusty fairly quickly. Anyone own the aluminum model? Just wondering if these can handle loads of lumber and rebar etc.
Sorry could only find one on a ford

thanks for any help

 

[JohnnyMac]

For a Ford pic?