![HVAC Plenum Ceiling Box 10X10X7 (10"X10" Square to 7" Round) with Drywall Flange - Connects to Vent Register Diffuser, Galvanized Steel Metal C-Box Duct, Airflow Conditioning Ceiling Registers - Ducting Components - HVAC Plenum Ceiling Box 10X10X7 (10"X10" Square to 7" Round) with Drywall Flange - Connects to Vent Register Diffuser, Galvanized Steel Metal C-Box Duct, Airflow Conditioning Ceiling Registers - Ducting Components -](https://m.media-amazon.com/images/I/51h-+AIptuL._AC_UF894,1000_QL80_.jpg)
HVAC Plenum Ceiling Box 10X10X7 (10"X10" Square to 7" Round) with Drywall Flange - Connects to Vent Register Diffuser, Galvanized Steel Metal C-Box Duct, Airflow Conditioning Ceiling Registers - Ducting Components -
![HVAC Plenum Ceiling Box 14x 14 X 12 (14"X14" Square to 12" Round) with Drywall Flange - Connects to Vent Register Diffuser, Galvanized Steel Metal C-Box Duct, Airflow Conditioning Ceiling Registers - HVAC Plenum Ceiling Box 14x 14 X 12 (14"X14" Square to 12" Round) with Drywall Flange - Connects to Vent Register Diffuser, Galvanized Steel Metal C-Box Duct, Airflow Conditioning Ceiling Registers -](https://m.media-amazon.com/images/I/11WUvVCfU-L._AC_UF894,1000_QL80_.jpg)
HVAC Plenum Ceiling Box 14x 14 X 12 (14"X14" Square to 12" Round) with Drywall Flange - Connects to Vent Register Diffuser, Galvanized Steel Metal C-Box Duct, Airflow Conditioning Ceiling Registers -
![Round Saddle Take Off for 10'' Inch Duct - 10'' Outlet Branch Extension - 90 Degree Splitter - Vent Duct Transition - Round Take-Off with Rubber Gasket for Better Fit - HVAC Takeoff Ducting - Amazon.com Round Saddle Take Off for 10'' Inch Duct - 10'' Outlet Branch Extension - 90 Degree Splitter - Vent Duct Transition - Round Take-Off with Rubber Gasket for Better Fit - HVAC Takeoff Ducting - Amazon.com](https://m.media-amazon.com/images/I/819qBPSLNUL._AC_UF894,1000_QL80_.jpg)
Round Saddle Take Off for 10'' Inch Duct - 10'' Outlet Branch Extension - 90 Degree Splitter - Vent Duct Transition - Round Take-Off with Rubber Gasket for Better Fit - HVAC Takeoff Ducting - Amazon.com
![Amazon.com: HVAC Premium Deep Blind Box | Return Air Box Register Boot 10" X 10" X 12" HVAC Ductwork Sheet Metal | Galvanized Steel Metal Box is Compatible with Duct 12" : Amazon.com: HVAC Premium Deep Blind Box | Return Air Box Register Boot 10" X 10" X 12" HVAC Ductwork Sheet Metal | Galvanized Steel Metal Box is Compatible with Duct 12" :](https://m.media-amazon.com/images/I/618vvxSyt9L._AC_UF1000,1000_QL80_.jpg)