D - Cup Outer Diameter | 
                                                                        N/A 3.1250 in79.375 mm | 
                                                                                D1 - Flange Outer Diameter | 
                                                                        N/A 3.3086 in84.038 mm | 
                                                                                C - Cup Width | 
                                                                        N/A 0.5313 in13.495 mm | 
                                                                                C1 - Cup Flange Width | 
                                                                        N/A 0.1406 in3.571 mm |