Rust

I have a garden home built in 96.

Above my garage door, my front door and my front double windows runs some type of metal bar that runs horizontal to the ground. Its thin, maybe 1/4 or 1/3 of an inch but then theres maybe 2.5-3 inches the long way showing.

The problem is, everywhere the metal is exposed, its rusted.

Im presuming I need sand paper and some kind of sealant.

What exactly do I ask for at Lowes ?

What kind of sand paper ?

What kind of paint or sealant ?

Was this supposed to be painted or treated and was not when the house was new or what ?

Thanks

Fine sand paper, paint with Rustoleum paint made just for this purpose. It may’ve been painted and now is time to redo. No paint lasts forever.