M-D Adjustable 36 In. L x 4-9/16 In. W x 1-5/8 In. H Standard Aluminum Threshold

Premium adjustable threshold. All season protection against drafts, moisture, dust, and insects. Thermal break design prevents frost build up on interior surfaces. Seals gaps from 1-3/8 In. to 1-5/8 In. H. x 4-9/16 In. W x 36 In. L.