This personalized Workshop sign is made from 1/8" ACM ( Aluminum Composite Material). It is available in three sizes or can be made to a specific size. A strong but light-weight material consisting of two sheets of pre-finished aluminum bonded to a polyethelene core makes this perfect for indoor or outdoor use. It will not rust. Please contact us if you would like to order a custom size. Please note all sizes are approximate as they may vary due to the length of the text.