A variable width panel (1) includes a frame (2) having a first stile (3) adapted to be disposed in a generally vertical assembled orientation along a first side of the frame (2). At least two rigid cross-members (8-13) having first ends thereof rigidly attached to the stile (3) having predetermined full width with which permits the cross-members (8-13) to be cut to a custom width during the on-site assembly. The frame (2) also includes fasteners (15) for detachably connecting the second ends of the cross-members (8-13) with the second stile (4) to define a pocket (29) therebetween including a core panel (28), and having a predetermined full width which permits the core panel (28) to be cut to a custom width. The variable width panel kit further includes at least one cover panel (30) configured to be detachably mounted on the frame (2), and enclose an associated portion of the same. The cover panel (30) has a predetermined full width which permits the cover panel (30) to also be cut to a custom width.
