Terms of the Trade: What is a Cripple Stud?

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A cripple stud is a non-structural framing board above or below a window or a door. Cripple studs serve as mounting material for surfaces on either side. In roof construction, they're known as cripple rafters, usually intersecting with an interruption like a skylight or vent structure such as a chimney.

Typically set 16 to 24 inches apart, measured from their centers, they maintain the spacing of the other studs in a surface, and are usually made from the same material.