... glass units (IGU’s) offer the perfect blend of thermal insulation, solar control and sound insulation for commercial and residential ... :Using reflective, tinted, patterned, or low-e glass, IGU’s are produced by adhering an aluminum ... levels and heat transfer even further. Specifications: Available glass types for IGU:Low-E, tinted, reflective, tempered ... Fill: Dry Air, Argon Double Glazed Window Glass