6-8 6-9/16" Interior Jamb Side (JL691PRF) – Primed Finger Jointed is a precision-milled door frame component designed for standard 6'-8" interior doors installed in 2x6 wall construction. With a 6-9/16" jamb width, it provides proper depth for thicker wall assemblies while ensuring accurate door alignment and smooth operation. This jamb side offers a stable surface for hinge installation and consistent reveal lines for a clean, professional finish. Manufactured from primed finger jointed material for enhanced straightness and dimensional stability, the JL691PRF arrives paint-ready to streamline installation in new construction, remodels, and door replacement projects.