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ARCHITECTURAL WALL DETAILS & CASING
          Dry Wall Receptor*                                               Jamb Extension Guide*



                                                             ½" - ⅝"
                                                                                                 adds ¼ to
                                                                                                 rough opening"
                                           Note: ½" - ⅝" Drywall Return
                                            adds ¼" to rough opening





                                                        .750"







          5/4 x 3-½" Flat Casing                                   4 ½" Banded Casing
          with/without J-Channel                                   with/without  J-Channel




                         .8125"             1.890"                                .8125"             1.983"








           3.500"
                                                                   4.500"







            Brickmould Casing
            with/without J-Channel
                                                          Northern Casing                Historic Sill Nose
                                                          (no J-Channel)
                           .8125"           1.780"                   1.221"

                                                                                                               1.625"
                                                                                                               2.188"

            2.250"                                          2.000"                                  2.4375"



                                                                                         Sill Nose
                                                                                                              0.938"
                                                                                                              1.188"



                                                                                                     1.375"




            *Does not apply to sliding patio doors

      Casing Details                                                                   www.mathewsbrothers.com
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