Take a look at our Octopus Metal Art, the sign in the picture measures 20"x15" and its cut out of aluminum so you do not have to worry about it rusting. 
 
We cut all our signs out of Marine Grade Aluminum for many reasons. Aluminum will never rust like steel. Aluminum us light weight, so hanging your sign is much easier. We also add a couple mounting holes in each sign to make them easy to hang.
 
Our signs are painted with Automotive Candy Paint and Clear. Using automotive paints and clears ensures your sign will look amazing for a very long time.