D - Cup Outer Diameter | 
                                                                        N/A 10-1/4 in260.350 mm | 
                                                                                D1 - Flange Outer Diameter | 
                                                                        N/A 10.6840 in271.374 mm | 
                                                                                C - Cup Width | 
                                                                        N/A 2.0625 in52.388 mm | 
                                                                                C1 - Cup Flange Width | 
                                                                        N/A 0.4375 in11.113 mm |