Product Name: Eggcrate DiffuserModel Number: MC SeriesPlace of Origin: ChinaFeatures: 1) Injection molded plastic: fire retardant ABS also available 2) Less condensation than metal grilles 3) Clip mechanism for handling heavy insulated duct 4) Various black plastic neck adaptors available 5) Do not rust 6) Easy to clean 7) Light weight 8) Cost effective