Zipwall 240 in. L Multicolored Aluminum Dust Barrier PoleZipWall 20 foot dust barrier poles are designed for the professional contractor. Four anodized aluminum sections telescope up to 20 feet and twist to lock. Each spring loaded pole is easy to set up without a ladder, a major safety benefit when working with high ceilings. The innovative non skid, non marking head locks the barrier material, allowing it to be raised with the pole, and holds it securely in place without damaging the ceiling. A tight dust