ألواح الألمنيوم المركبة (ACP) typically range in thickness from 3mm to 6mm, with 4mm being a common standard for exterior applications. The panels consist of a polyethylene core sandwiched between two thin aluminum sheets. The exact thickness can vary by manufacturer and specific product specifications, but generally, they provide a balance between rigidity, weight, and cost-effectiveness for facade cladding and other outdoor uses.