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M-D Bumper Threshold, All Purpose, Series: Ultra, 3-1/4 in Width, 36 in Length, 1 in Height, Aluminum, Mill, UL Listed, ADA Approved
M-D Door Threshold, Heavy Duty, Fluted Top, M-D, 4 in Width, 36 in Length, 1/2 in Height, Aluminum, For Commercial Use, Protection against Drafts, Moisture, Dust and Insects