Review on Efficient IPower Non Insulated Aluminum Ventilation Kit: Enhance Airflow and Temperature Control by James Jenkins

Made in China but beautifully finished and packaged. Includes two 8' x 4' flexible air ducts and four serrated stainless steel clips. Air ducts are aluminum over vinyl with a spring steel spiral throughout. Serrated clips are impressive for the price, but are made of soft stainless steel and won't hold up to over-tightening without slots in the band flexing and slipping.