Pearl White-colored HDPE Double-Wall Corrugated Clean Fresh Air Duct is made of high-density polyethylene (HDPE) material. It boasts excellent temperature resistance (-70℃ to 100℃), resistance to acid and alkali corrosion, and superior electrical insulation performance. Crafted from new environmentally friendly raw materials, this product features an extended service life. With improved structural adjustments, it significantly reduces noise and enables greater air flow at the same pipe diameter.