need help finding 3x3 aluminum post for patio

[keakar]

long story but my dad ran his lawn mower right into his metal patio post and bent it pretty bad.

thankfully he and the lawn mower are ok, but the 3x3 aluminum rail is bent over about 4" or so, so it needs to be replaced, but where do you go buy them?

its the powder coated white ones with the 3 raised lines running up and down it long ways.

after google searching, I cant seam to find any place that sells the posts directly, and its such an easy and simple job to replace, I surely don't want to pay the patio contractor to sell me a post at an extremely high price or even worse, come out to replace it for a huge bill.

does anyone know a patio contractor that will sell me a post without "sticking it to me" or a supplier where I can go get a post?

I need a 3"x3" aluminum post 10 ft long (preferably in white) and somewhere near the new Orleans area or within 50 miles of it

thanks for any help you can give me