1. Aluminum Alloy base and Nylon brush, anti-rust and durable. 2. UV stabilized, dependable, long-lasting, cost-effective. 3. Brush greatly reduce the infiltration of light, air, wind, rain, and snow, prevent heat loss, control the penetration of smoke and fumes. 4. Brush Door Sweeps are designed to seal the gap between the bottom of the door and the top of the threshold or floor surface. 5. Widely used on escalator, elevator, cabinet, machine tool etc. Specification: Product Name: Door Brush Main Color: Black Material: Aluminum Alloy, Nylon Weight: 327g Brush Length: 100cm / 39-inch Brush Height: 10cm / 4-inch Overall Height: 12cm / 4.8-inch Package Content: 1 x Door Brush.