Abstract: A modular, insulated framing beam assembly is adapted for residing at a head of a door or window frame. The beam assembly includes an elongate top framing member having first and second opposed ends, first and second opposed sides, and top and bottom major surfaces. The top framing member includes a pair of laterally-spaced and longitudinally-extending grooves formed in its bottom major surface. An elongate bottom framing member resides in spaced, vertical registration with the top framing member. The bottom framing members has first and second opposed ends, first and second opposed sides, and top and bottom major surfaces. The bottom framing member includes a pair of laterally-spaced and longitudinally-extending grooves formed in its top major surface. First and second laterally-spaced side framing members are positioned in respective pairs of laterally-spaced grooves formed in the top and bottom framing members.