4-1/4" Casing 445
This is a very large and unique casing profile. You would not need a backband with this one. Casing is used to trim around doors and windows. It covers the gap between the drywall and the jamb. Casing is often the most prominent trim feature in your home and should be thicker than the baseboard. To increase the width and depth of the casing you can add a back band.