Frame catwalk material.

[mavrick0]

I've seen a few trucks that have some nice material used for the catwalk between the frame rails that actually looks like a catwalk not just a solid piece of metal, but haven't been able to find where they got it. So if anyone can help me out and point me in the right direction that would be great. I need a way to hide my fifth wheel servo and I'm not a fan of the solid plate.