Slim-Line Garage Door Brush Seal Kit — 18 ft, White (Two-Car Door) Brush perimeter seal designed for light-colored residential garage doors (white, almond, beige, and cream). UV-stabilized white polypropylene bristles flex with the door, seal against wind, dust, and pests, and resist yellowing under direct sun. Unlike vinyl perimeter seals, the bristles won't stick to the door panel in heat or cold, which means no extra drag on your opener and no burned-out motors. Why brush instead of vinyl or rubber Won't bond to the door panel or fight your opener, even on hot afternoons or freezing mornings Won't scuff, streak, or leave marks on painted finishes Bristles conform to minor irregularities along the jamb for a tighter seal than a rigid lip UV-stabilized fibers stay white, no yellowing over time What's in the 18 ft kit (fits one, two-car door up to 9 ft × 18 ft) 4 × 48" white polypropylene brush & retainer sections 4 × 54" white polypropylene brush & retainer sections Aluminum retainer channels (3/4", 45°) Self-tapping mounting screws Installation instructions Door compatibility Sectional aluminum & steel Sectional wood & ribbed roll-up Specs Brush: 1" UV-stabilized white polypropylene bristles, polypropylene spine Retainer: 3/4" 45° aluminum Coverage: One two-car garage door Application: Top and side perimeter seal on residential garage doors.