Duct Outlet 8\ x 8\ Ceiling Box, w/ 8\ Round Collar - Connects Register Vent and Diffuser HVAC
- 26 Gauge Galvanized Steel, Single Wall with No Insulation.
- Built with standard plaster ground flange all the way around the square portion..
- Connects a 8" Round Duct to a 8" x 8" Diffuser or Register Vent..
- The ceiling box is nailed into the attic rafters and plastered or dry walled around the flange called plaster ground..