... -e glass, IGU’s are produced by adhering an aluminum frame between two panes of glass using two layers of ... the heat exchange and also reduces noise levels. The aluminum spacer is filled with silica desiccant pellets to ensure removal ... . Size:350x180mmGlass Thickness:3-19mm (1/8" - 3/4")Aluminum Spacer Width:6,9,12,14,15,16mm (1/4 ... ", 19/32", 5/8")Spacer Fill: Dry Air, Argon Double Glazed Window Glass