Abstract: A head track for combination with a post and/or panel of a wall system, comprising an elongated extrusion comprising an elongated body and a pair of integral elongated wings extending normal to the body, the body having a T-slot located between the wings, the wings each having an elongated gasket secured thereto and protruding toward each other to define a receiving space therebetween for sealed engagement with the post and/or panel.

Abstract: A post and batten assembly for a wall panel system, the elongated post having a plurality of sides, at least one of which has an elongated groove and a pair of outer shoulders astraddle the groove, an elongated batten having a central body positioned in the elongated groove of and attached to the post, and the batten having a pair of flanges extending opposite each other and engaging the outer shoulders of the post, the batten central body having an outer face, and defining an elongated cavity open at the outer face, and the cavity having a pair of inner shoulders so that the cavity and inner shoulders define a T-slot in the batten to receive a T-bolt fastener. Fasteners connect the elongated batten to the post. Flanges of a pair of batten extend beyond the post parallel to each other to define a panel-receiving pocket therebetween.