VIVOSUN Dryer Vent Hose, 8 inch Aluminum Foil Ducting, 25FT Long Heavy-Duty Dryer Hose Vent Kit for HVAC Ventilation, Exhaust, Duct Fan Systems, Black Flexible Air Duct w/ 2 Clamps

This 4-inch aluminum foil ducting is extremely well made and far sturdier than I expected. The aluminum layering feels thick and reinforced, not cheap or flimsy, and it holds its shape perfectly once installed. I really like the black outer layer—it looks clean, professional, and helps with light control compared to standard silver ducting. The hose is flexible enough to route easily, yet strong enough that it doesn’t collapse or kink. The 8-foot length was perfect for my setup, and the included clamps fit snug and secure with no air leaks. Overall, this is a high-quality, heavy-duty vent hose that feels reliable and built to last. Great for HVAC, dryer vents, or exhaust fan systems. I would absolutely buy this again and recommend it to anyone looking for durable, trustworthy ducting.

Excelente

Habe es zur Abluft meiner Brauchwasser Wärmepumpe im Keller gekauft, passt

Excellent duct. Works really well. Even when you put zip ties around it, it still keeps its shape and allow full airflow. I love it. Recommend

My portable ac unit vent broke so I bought this one and it works create. See picture. Material seems to be of good quality. it has clams to clamp both ends. Looks great with black color. Very easy to install, just open up and pull everything comes out. Light weight and it woes as expected. Just tighten the clamps at both ends nicely.