![4 Inch Round Roof Rain Cap HVAC Vent Galvanized Steel All Weather Chimney Cap Roof Top Round Roof Vent with Rubber Gasket for Perfect Insulation Vent Cover (4'' Inch) - Amazon.com 4 Inch Round Roof Rain Cap HVAC Vent Galvanized Steel All Weather Chimney Cap Roof Top Round Roof Vent with Rubber Gasket for Perfect Insulation Vent Cover (4'' Inch) - Amazon.com](https://m.media-amazon.com/images/I/71Yl0DIXepL.jpg)
4 Inch Round Roof Rain Cap HVAC Vent Galvanized Steel All Weather Chimney Cap Roof Top Round Roof Vent with Rubber Gasket for Perfect Insulation Vent Cover (4'' Inch) - Amazon.com
![1Pc RV Plumbing Vent Caps - Camper Vent Cap Replacement for RV Trailer Camper Motorhome, RV Roof Sewer Vent Cover Caps - Walmart.com 1Pc RV Plumbing Vent Caps - Camper Vent Cap Replacement for RV Trailer Camper Motorhome, RV Roof Sewer Vent Cover Caps - Walmart.com](https://i5.walmartimages.com/asr/78fb34d7-4e28-41ef-ac2f-856324536ea7.e2da467b5906a79e3687efcdd0352039.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
1Pc RV Plumbing Vent Caps - Camper Vent Cap Replacement for RV Trailer Camper Motorhome, RV Roof Sewer Vent Cover Caps - Walmart.com
![Is this cap incorrect? Buying a new house and the Inspector said to remove it, but want to learn the 'why'. : r/Plumbing Is this cap incorrect? Buying a new house and the Inspector said to remove it, but want to learn the 'why'. : r/Plumbing](https://i.redd.it/yehlewo3edbb1.jpg)
Is this cap incorrect? Buying a new house and the Inspector said to remove it, but want to learn the 'why'. : r/Plumbing
![Oatey 3-in to 4-in x 4-in PVC Vent and Pipe Flashing in the Vent Pipe Flashing department at Lowes.com Oatey 3-in to 4-in x 4-in PVC Vent and Pipe Flashing in the Vent Pipe Flashing department at Lowes.com](https://mobileimages.lowes.com/productimages/94e2b4e5-14c2-4fd0-8696-985ad92ad8f0/47665009.jpg)
Oatey 3-in to 4-in x 4-in PVC Vent and Pipe Flashing in the Vent Pipe Flashing department at Lowes.com
![Amazon.com: Vent Systems 4" Inch Round Chimney Cap Galvanized Steel for All Weather Conditions Top Round Exhaust Cap with Rubber for Perfect Insulation Roof Vent Cap Vent Cover 4 Inch 100 mm : Amazon.com: Vent Systems 4" Inch Round Chimney Cap Galvanized Steel for All Weather Conditions Top Round Exhaust Cap with Rubber for Perfect Insulation Roof Vent Cap Vent Cover 4 Inch 100 mm :](https://m.media-amazon.com/images/I/81OSBQCydrL.jpg)