This Proseal brush seal kit is designed for commercial and industrial garage door applications where a durable, flexible weather barrier is needed. The 10’ kit includes one 4’ section and one 6’ section of polypropylene brush with matching aluminum retainer for a clean, splice-free installation. The 45° holder helps position the 3” brush for effective sealing against air, dust, dirt, and debris. Designed for energy-efficient performance in temperatures down to -70°F. Fasteners are included.