3mm Aluminum Composite Material: a rigid, lightweight panel, composed of two aluminum sheets bonded to a solid polyethylene core, providing a smooth, durable, and weather-resistant surface for both indoor and outdoor applications. It has a thickness of approximately 1/8 of an inch. 6mm Aluminum Composite Material: a rigid, flat-panel substrate consisting of two sheets of aluminum bonded to a solid polyethylene core. The 6mm thickness makes it a heavy-duty, durable, and highly stable material that provides a superior, professional finish for demanding printing projects.
