Small Wood

Aluminum with 2" wide top bar, 1 7/8" wide bottom bar 3/4" sq pickets and 2" to 4" sq posts

Large Wood

Aluminum with 3" wide top and bottom bar, 1" sq pickets and 3" or 4" posts

Ironlike

Aluminum with 1 15/16" or 2 1/4" wide top bar, 1 1/4" to 4" wide sq posts

Pipe Rails

Pipe rails are commonly used in commercial applications. They are often made without vertical pickets

Walk Gates

Small gates typically 3-6' wide