Abstract: A cathedral ceiling beam support combination of identical first and second elongated support elements each extending along longitudinal axes thereof, each having opposite first and second ends and having intermediate structure extending along an imaginary upright plane between and interconnecting the first and second ends, pivot structure and thereof pivotably connecting the first and second support elements through the intermediate elongated structure, each of the first and second support elements further including a laterally-extending flange having a downwardly-facing support surface adapted to press against a surface of a support beam, and beam-attachment structure and mechanism thereof on the laterally-positioned flange for securing the laterally-positioned flange to a support beam, the laterally-extending flange and the downwardly-facing support surface each extending at an angle of about 90 degrees relative to the upright plane, the beam-attachment structure including a plurality of through-space apert