Prevent odors and gasses from invading your RV living space with Lipperts 360 Siphon Roof Vent Generation 2. The updated design improves holding-tank ventilation and is easier to install. The new model helps you avoid as much roof sealant work as possible for smooth, easy installation. Also speeds up waste breakdown, eliminating the need for harmful chemicals. Built-in bug screen. Built of a strong polycarbonate. Universal fit. Made in USA. Colors: Black, White. Type: Air Vent Siphon.