bronze reflective louver glass color: bronze thickness:4mm,5mm size(inch):4" and 6" pattern:reflective Bronze Louver Glass Function Louver window Is a window which consists of parallel glass, acrylic, or wooden louvers set in a frame. The louvers are locked together onto a track, so that they many be tilted open and shut in unison, to control airflow through the window. Specification thickness 4-6mm colour clear,green,blue,bronze specification In inch In metric unit(mm) 4 "x20" 101.6x508 4 "x21" 101.6x533.4 4 "x24" 101.6x609.6 4 "x26" 101.6x660.4 Best wishes we can produce as customers' demand,any questions pls feel free to contact us,we'll do our best to support your business!