AC Infinity Backdraft Damper Ducting Insert, Black Galvanized Steel, 4" SHIP_FR5 Packaged 30 pieces per bag

Packaged 30 pieces per bag

Soil Amendment or Mulch:

Mix 1/4 cup per gallon of soil

01 pH while the EC and TDS readings are displayed with a 0

plant shops

AC Infinity Backdraft Damper Ducting Insert, Black Galvanized Steel, 4" SHIP_FR5 Packaged 30 pieces per bagAC 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