Ductmate Duct Access Door: For 29 In_30 In_31 In_32 in Ducts, 18 in X 24 In, 18 Ga, Steel, Thumbscrews Model: GRDR241832F2GA

Ductmate Duct Access Door: For 25 In_26 In_27 In_28 in Ducts, 12 in X 16 In, 20 Ga, Steel, Knobs Model: GRDRI161228GA

Elima-Draft Registers & Diffusers Type: Air Deflector Vent Cover Style: 3 Way Qty 1 | Registers Diffusers Type Pkg Qty 1 | 17486994

Ductmate Duct Access Door: 22 in X 22 In, 24 Ga, Steel, Single Cam, Tab-In Hinge, 175F Max Temp Rating Model: GRFDH22GA

Alpine AH 24-36CD KIT5 Concealed Duct Return Kit For (Four Returns, 10 Inch Ducts)

Alpine AH 18-24CD KIT7 Concealed Duct Return Kit For (Two Returns, 12 Inch Ducts)