This builder colonial casing was used in sub-division homes in the 1980’s. Not so much anymore, but we have it in stock if you need a match. 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.