An alternative to replacing existing casing -- Back-Band Trims. Most Back Bands have a 3/4 back set that fit most of our casings. For thinner
Door Casing Styles and Which Ones Will Suit Your Home Best - The Moulding Company
3 x 1 MDF Colonial Casing Backband – Cambridge Crown and Trim
Casing Back Band EWCB15 Poplar
Casings for Doors & Windows
Shaker Crown Moulding, San Francisco, CA
A Look at Traditional Trim Designs
Holmes Building Materials
Additional Trim Products - Riverside Millwork Group
Door Manufacture Backband - Door & Window Trim - Mouldings