Glass Block 1.wide range of design 2.energy-saving 3.Amenity,safety 4.maintenance free Grey Parallel Glass Block Glass block details: 1. Specification: 190*190*80/190*190*95/145*145*80 2. Pattern: Clear, mist, meteor, parallel, crystal parallel, lattice, rhombus, double star, frost bistar, sea wave, water bubble, diamond, oblique line, cycle rhombus, well shape, mosaic, ice shadow, rain, phoenix ...