D - Cup Outer Diameter | 
                                                                        N/A 20.5625 in522.288 mm | 
                                                                                D1 - Flange Outer Diameter | 
                                                                        N/A 21.1211 in536.476 mm | 
                                                                                C - Cup Width | 
                                                                        N/A 2.4375 in61.913 mm | 
                                                                                C1 - Cup Flange Width | 
                                                                        N/A 0.5625 in14.288 mm |