AC Infinity Flexible Four-Layer Ducting, 8-FT Long, 4-Inch Ventilation As a convertible ballast

As a convertible ballast

By reducing surface tension and increasing the leaf surface to active fertilizer or control

High-Quality Activated Carbon Filter: At 4"x8"

and circular vent holes with adjustable nylon straps for better installation of airflow systems

7mil thick mylar with black PE film backing for added strength

AC Infinity Flexible Four-Layer Ducting, 8-FT Long, 4-Inch Ventilation As a convertible ballastDescription Ventilation Application Design: Specifically intended for ventilation applications including HVAC, dryer, and airflow enhancing spaces. Enhanced by four layer design, this duct offers superior durability and resistance to leaks, tears, and cuts. Flexible Structure: Underpinned by a steel wire spiral structure, this ventilation duct is not only robust but also flexible, easy to install, and suited to hard to reach spots. Material