Bosch Benchmark Series 36 Gray Tempered Glass Surface Gas Cooktop NGMP677UC Author: admin November 5, 2023 Bosch Benchmark Series NGMP677UC. Cooktop Design Coordinates with Bosch Ovens and Ventilation. Cooktop Surface Material Cooktop Surface Gray Tempered Glass Surface. Type of Grate Ice Makers. Tempered glass with Porcelain Steel Heat Shields. bosch benchmark, bosch, cooktop, glass, gray, ngmp677uc, series, surface, tempered