Aluminum Composite Material (ACM)
Aluminum Composite Material (ACM) is a rigid sheet made of two sheets of pre-finished aluminum, bonded to a polyethylene core. Light-weight, without sacrificing durability, ACM sheets are often used for outdoor signage, and channel letter backings.
Polycarbonate
Polycarbonate, also referred to as PC, is a tough, impact-resistant, virtually unbreakable material used in wide variety of applications. It is an amorphous thermoplastic material, with a continuous use temperature range of up to 265° F (129° C).