Specification Binding : Misc. Brand : Federal Signal Label : FEDERAL SIGNAL Manufacturer : FEDERAL SIGNAL MaterialType : Aluminum,Horn Model : TR PackageDimensions_Weight : 2.5 PackageDimensions : L:21 X W:18 X H:18 PartNumber : TR ProductGroup : BISS Basic ProductTypeName : SAFETY_SUPPLY Publisher : FEDERAL SIGNAL SmallImage_Height : 56 SmallImage_URL : https://m.media-amazon.com/images/I/41Nh1zolx+L._SL75_.jpg SmallImage_Width : 75 Studio : FEDERAL SIGNAL Title : Gasketed Trim Ring, Gray Weight : 2.5 WeightUnit : pounds