Amazon.com: 6" Inch Metal Tee Cap - Round Vent Cover - Galvanized Steel - Indoor and Outdoor Pipe Cover - Dryer Vent Cover - Dryer Duct End Cap - 6In Metal End
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304 Stainless Steel, 6 in Fitting Pipe Size, Round Cap - 60XU99|1330009630 - Grainger
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S & K Galvanized Steel 6 In. x 9-1/2 In. Vent Pipe Cap - Bliffert Lumber and Hardware
Butt Weld Pipe Fittings - 6" Cap SCH 40 304/304L SS
Amazon.com: 6" Inch Metal Tee Cap - Round Vent Cover - Galvanized Steel - Indoor and Outdoor Pipe Cover - Dryer Vent Cover - Dryer Duct End Cap - 6In Metal End
DuraVent 6DP-VC 6" Inner Diameter - DuraPlus Class A | Build.com