White Matte/White Matte
White Matte/White Matte. Aluminum Composite Material (ACM) is a rigid material made of two sheets of pre-finished aluminum, bonded to a polyethylene core. Light-weight and highly durable, ACM sheets are often used for outdoor signage, and channel letter backings. Aluminum composite material is easily routed, cut, or roll-formed, making it a material of choice for architectural faces and building cladding, or even a replacement for steel.