M-D 0.75 in. H X 3.75 in. W X 36 in. L Mill Aluminum Deluxe Low Threshold Silver

THRESHOLD ALUM 1/2X3/4X36 IN Deluxe heavy-duty threshold. Heavy extruded aluminum threshold with replaceable vinyl insert. Vinyl caulking feet seal bottom of threshold. 3/4 in of height with insert. 1/2 in of height without insert.