Abstract: A rail and supported panel assembly having first and second rail portions, each portion having a constant cross section defining an elongate recessed channel on an underside. Also included are a panel supported at a top edge, a post for supporting the rail portions, and a rail-to-post connection assembly located between the post and the rails. The connection assembly has a pair of partially overlapping arms movable with respect to each other about a pivot to accommodate a range of first and second rail portion alignment angles.