M-D Door Threshold, Adjustable, Thermal Break, M-D, 4-9/16 in Width, 36 in Length, 1-3/8 - 1-5/8 in Height, Aluminum, Satin Nickel, Grey, Resists: Moisture, Rot, Termite, For Protection Against Drafts, Moisture, Dust and Insects. .
All season protection against drafts, moisture, dust and insects
No rot no warp composite design; easy to install and adjust
Thermal break design prevents frost build-up on interior surfaces;
Seals gaps from 1-3/8 inches to 1-5/8 inches high
4-9/16-inches wide by 1-5/8-inches high by 36 inches long