Aluminum is hollow and thin walled for being extruded. It requires a skinny angle iron footing that wobbles in ground. Paint has trouble sticking to aluminum and usually flakes off in short time. Aluminum is expensive so posts are skinny to save cost and end up out of proportion with the mailbox. Aluminum mailboxes are light weight, shatter easily and usually have a matte finish that address letters do not stick well to. Cast aluminum is better suited for making ergonomic door handles and decorative sand cast doors like our top quality Patriot and Heritage mailboxes.
