Size of Stile                            # of Cores                      Size of Core

3 ¼                                         2                                      0.750

3 ¾                                         3                                      0.670

3 7/8”                                    3                                       0.711 

4 ¼                                         3                                      0.836

4 ¾                                         4                                      0.752

5                                             4                                      0.815

5 3/8                                      4                                      0.908

5 ½                                         5                                      0.742

5 5/8”                                     5                                      0.777

5 ¾                                          5                                      0.792

6                                              5                                      0.842

6 ¼                                          5                                      0.892

6 ¼                                          6                                      0.741

6 ½                                          6                                      0.783

6 ¾                                          6                                      0.825

7                                              6                                      0.866

7 ¼                                          6                                      0.902

7 ¼                                          7                                      0.777

7 ½                                          7                                      0.813

7 ¾                                          7                                      0.849

8                                              8                                      0.773

8 ¼                                          8                                      0.804