The W1062-Borofloat 10″ square × 4 mm thick optical blank is a precision-cut borosilicate glass substrate ideal for demanding optical, scientific, and industrial applications. Manufactured from high-quality BOROFLOAT® glass with tight thickness and dimensional tolerances, this 254 mm square blank offers excellent transparency, low thermal expansion, and exceptional surface quality with fine-ground edges and safety bevels. Its stable optical properties and low warp make it well-suited for imaging systems, metrology, photonics, and precision fabrication environments where reliable performance and material homogeneity are essential.