Black Aluminum Composite Panel (ACP) — 4x8 ft, 4mm, 0.18mm Aluminum Skin

The B-GB4-B is a black aluminum composite panel (ACP) measuring 4 ft x 8 ft with a 4mm total thickness and 0.18mm aluminum skin layers bonded to a polyethylene core. This panel format is commonly used in commercial signage, architectural cladding, and fabricated sign cabinet construction where a lightweight, rigid, and paintable substrate is required. The panel features an aluminum-bond construction designated as Alum-Bond, combining the structural rigidity of aluminum skins with the reduced weight of a composite core. The black finish makes it suitable for direct use in sign faces, trim, and framing applications without additional surface treatment.