Page 19 - SW-2019-OnLine_Rev1

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