Features: Helps maintain indoor temperatures by minimizing heat loss in winter and blocking hot air during summer. Supports better energy usage in warehouses, workshops, and garages. The dense nylon bristles act as a soft barrier that dampens outdoor noise, creating a quieter indoor environment—ideal for both industrial and residential settings. Specifications: Material: aluminum, nylon Color: silver base with black bristles Size: Brush Length: 2 inches Brush Thickness: 0.5 inch Each Strip Length: 4 feet Total Length Provided: 24 feet (6 x 4ft sections) Compatible Door Size: up to 8ft wide x 8ft high Package includes: 6 X 4ft Aluminum Brush Seal Strips (Total Length: 24ft) Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. This product comes with separate brush strips and aluminum mounting plates. Installation is required. All necessary screws and pre-drilled mounting holes are included to assist with setup. Small parts included, please keep them away from little kids to avoid swallowing risk