AC Infinity Backdraft Damper Ducting Insert, Black Galvanized Steel, 4" SHIP_FR5 Naturally buffered in the United

Naturally buffered in the United States with limestone

Jack's Professional Blossom Booster earned its reputation among commercial orchid growers who demand consistent flowering performance and premium-quality blooms

Reapply as Needed:

plant shops

Packaged 30 pieces per bag

AC Infinity Backdraft Damper Ducting Insert, Black Galvanized Steel, 4" SHIP_FR5 Naturally buffered in the UnitedAC INFINITY BACKDRAFT DAMPER DUCTING INSERT An anti draft duct insert designed for use with range hoods, bathroom fans and other home HVAC applications. Features outer rubber gaskets that create an airtight seal and grip between the damper and ducts. Mounts horizontally or vertically to prevent backflow and debris from entering ducting. Galvanized steel body with spring loaded aluminum damper blades that open with minimal airflow. Fit for 4 in. Duct