AC INFINITY Backdraft Damper Ducting Insert, 4-Inch, Black Galvanized Steel Canna Cribs Podcast They are designed to withstand

They are designed to withstand extreme temperatures and conditions

so confirm yours are compatible before wiring

Vacuum port: KF25 flange x 1

so no salt crystals reach the contents

AC INFINITY Backdraft Damper Ducting Insert, 4-Inch, Black Galvanized Steel Canna Cribs Podcast They are designed to withstandAC INFINITY Backdraft Damper Ducting Insert, 4 Inch, Black Galvanized Steel The AC INFINITY Backdraft Damper Ducting Insert is a crucial addition to any home HVAC system, especially designed for 4 inch duct openings. This robust damper insert is expertly crafted from black galvanized steel, combining durability with a sleek finish. Its compact product length of 5. 03 inches makes it an ideal fit for various ventilation setups, accommodating both