Abstract: An adjustable threshold assembly includes a base member having a central groove for receiving an inverted U-shaped channel threshold member, which is supported by a plurality of wedge sets spaced at regular intervals and each consisting of a fixed bottom wedge and a top wedge removably fastened to the web of the threshold member by passage of a screw through a slot in the web. Height adjustment is provided by lateral translation of the top wedges in cooperation with the corresponding fixed bottom wedge. The threshold member includes a resilient door engaging cushion strip overlying the web and covering the screws and slots therein.