... 2.energy-saving 3.Amenity,safety 4.maintenance free Green Parallel Glass Block Glass block details: 1. Specification: 190*190*80/190* ... , lattice, rhombus, double star, frost bistar, sea wave, water bubble, diamond, oblique line, cycle rhombus, well shape, mosaic, ice ... following information is based on a typical 190x190x80mm clear glass block. Composition: Silica-sand, soda ash, calcium. Fusion is ...