This W1228-Si silicon rectangle wafer measures 7.5″ x 2.8″ x 0.394″ thick and is precision-manufactured for demanding optical, semiconductor, and research applications. Made from high-quality monocrystalline silicon, it offers excellent dimensional stability, thermal performance, and surface quality. With tight tolerances, polished surfaces, and a commercial edge finish, this silicon blank is ideal for precision fabrication, metrology, and advanced engineering environments where consistency and reliability are critical.