Extruded aluminum smooth flat top threshold with aluminum finish Heavy-duty aluminum for long lasting durability Seals gaps up to 1/8 inch high All season protection against drafts, moisture, dust and insects Has multiple uses, for threshold, floor trim and repair Use with low pile carpet or tile Includes screws for easy application Consumers and industry professionals throughout the world trust M-D Building products and services, positioning them as the leaders in the weatherstripping, floor and tile trims, perforated aluminum sheets, digital levels, and caulking categories