Gary Katz

Craftsman-style window and door casing is defined mostly by the entablature (the horizontal trim) above the jambs, which consists of three separate pieces of molding—the architrave bead, the frieze, and the crown. It may look challenging, but it’s pretty simple because everything hinges on the length of the frieze.

If you follow the flush-cut rule, where the ends of the frieze are flush with the outside edges of the casing (see “A Look at Traditional Trim Designs,” Aug/15), the length of the frieze would then be equal to the outside dimensions (O.D.) of the casings below. If you want the frieze to go past the casings, then add a little more. But be careful...

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