The W1138-Schott Borofloat 160 mm square × 2 mm thick optical blank is precision-manufactured from high-quality BOROFLOAT® borosilicate glass, delivering excellent transparency, low thermal expansion, and superior surface quality for demanding optical and scientific applications. With tightly controlled dimensions, a clear aperture of 156 mm square, fine-ground edges with protective bevels, and a low reflective wavefront error, this square wafer is ideal for imaging, metrology, photonics, and precision engineering environments that require reliable performance and material stability.