PLASTIC SUPPLY, 6 in Duct Fitting Dia, 2 3/4 in Duct Fitting Lg, End Cap - 6UXP0|PVCCA06 - Grainger
The Plumber's Choice 6 in. Pvc Flexible Pipe Cap with Stainless Steel Clamps E06716 - The Home Depot
Cantex - 5140042 - End Cap, UL End Cap, 6 in., PVC, 6.625 x 3 in., Gray, 11 H x 18 L x 18 W in.
Active Ventilation 6 in. D Grey Aluminum Aura PVC Vent Cap Exhaust Static Roof Vent with Adapter for Sch. 40 or Sch. 80 PVC Pipe AV-6-PVC-WD - The Home Depot
ERA 6 Inch Sch 40 PVC End Cap - Pack of 2 - - Amazon.com
Complete 4" 6" PVC Door Kit PVC Door - PVC End Cap & U-Bolt & Harness – CamoTube
NDS PVC S&D Cap, 6 in. 6P06 - The Home Depot
NDS PVC S&D Cap, 6 in. 6P06 - The Home Depot
Charlotte Pipe 3-in Schedule 40 PVC Cap in the PVC Pipe & Fittings department at Lowes.com
6 Inch PVC Sewer & Drain Cap Fitting | PlumbersStock