A PUF Panel (Polyurethane Foam Panel) is a lightweight, prefabricated construction material known as a sandwich panel. It consists of a core of high-density Polyurethane Foam for superior thermal insulation, bonded between two durable metal sheets (typically pre-painted steel). These panels are primarily used for cold rooms, clean rooms, and pre-engineered buildings due to their excellent energy efficiency, rapid installation, and structural durability.