Specification Brand : Generic BulletPoint1 : Inside Diameter - 1 7/8'' BulletPoint2 : Outside Diameter - 2 15/16'' BulletPoint3 : Depth - 1 1/8'' BulletPoint4 : Used to replace escutcheons without having to drain the sprinkler system. BulletPoint5 : Split Inner Ring for 1/2'' NPT Sprinkler Heads BulletPoint6 : NPT stands for National Pipe Thread. To determine what size sprinkler head you have, measure the bottom of your sprinkler head at the base of the threads. The 1/2'' fire sprinkler base measures at 3/4''. The 3/4'' fire sprinkler base measures at 1''. BulletPoint7 : Item shape: Round Color : Chrome GpsrSafetyAttestation : 1 ItemName : Fire Sprinkler Retrofit Recessed Escutcheon Steel Split Inner Ring 1/2" NPT Chrome ItemPackageDimensions_Height : 10.3886 centimeters ItemPackageDimensions_Length : 9.1948 centimeters ItemPackageDimensions_Width : 9.906 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : lawn-and-garden-above-ground-sprinklers Manufacturer : Generic Material : Metal ModelName : Fire Sprinkler Retrofit Recessed Escutcheon Steel Split Inner Ring Chrome ModelNumber : Generic NumberOfItems : 1 PartNumber : Generic PowerSourceType : manual ProductDescription : Fire Sprinkler Retrofit Recessed Escutcheon Steel Split Inner Ring 1/2" NPT Chrome Inside Diameter -1 7/8" Outside Diameter - 2 15/16" Depth - 1 1/8" ProductSiteLaunchDate : 2020-05-15T04:59:01.291Z SafetyWarning : For adult use only. Handle with care. Ensure proper installation and maintenance. Size : DN15 (G1/2) SupplierDeclaredDgHzRegulation : other SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 40141700