Poly-Metal is an aluminum composite product.  It holds up very well and will realisticly last 5 to 7 years outdoors.  It is a good material for permanent exterior signage, such as parking lot signs.  It comes in two thicknesses, 3mm and 6mm.  Pricing is shown below for a few common sizes in our standard 3mm poly-metal.  A discount may be offered for multiples of the same sign.  We have a $35 minimum requirement for poly-metal orders.