Plumbing Vent Cap. Used it for placement on the top of your RV, trailer or motorhome when the sewer cap is broken or old. It helps to pull out waste gas and provides fresh air to your motorhome, camper. Prevent the breeding of odor and moisture, keep the air fresh. Features -Color:White -Material:PP -Size:13.00X13.00X8.00cm/5.11X5.11X3.14in -The RV plumbing vent cap is , anti-aging, and durable without weathering, which can be used for years. -The RV plumbing vent cover comes in a ventilation design, effectively expels sewer gas. -Prevent the unpleasant smell from penetrating your RV’s cabin through the , keeping the air fresh in your RV. -Our RV roof vent can prevent the wind and rain from getting into the plumbing, keeping your RV cabin dry and clean on rainy days. -Simple and quick installation, saving you time and trouble. Durable and reliable. Beautiful and practical. Package list: 1 x vent cover