IMPERIAL DOORS                                                       METRIC DOORS
INCHES    METRIC mm        FEET & inches          METRIC mm             SIZES INCHES
12                  306                      1'                         526                                20 3/4"
15                  381                      1' 3"                    626                                24 5/8"
18                  457                      1' 6"                    726                                28 5/8"
21                  533                      1' 9"                   826                                32 1/2"
24                  610                      2'                        926                                36 1/2"
27                  686                      2' 3"                  
28                  711                      2' 4"                                                  
30                  762                      2' 6"
32                  813                      2' 8"
33                  838                      2' 9"
34                  863                      2' 10"
36                  914                      3'
42                1067                      3' 6"
48                1220                      4' 

IMPERIAL HEIGHTS                                            METRIC HEIGHT
72                1829                        6'                       2040                              80 1/4"                             
78                1981                        6' 6"
80                2032                        6' 8"
81                2057                        6' 9"
82                2083                        6'10"
84                2134                        7'

MEASUREMENTS IN BOLD INDICATE THE POPULAR STANDARD DOOR SIZES