This is a Ventline plumbing vent cap. This fits 1-1/2" pipe that extends 2 to 2-1/2" above the roof. This Ventline sewer vent is 2 pieces, a base and snap on cap (cap can also use one screw to attach). Priced each.
Available in Colonial White, Grey and White.
Part # 601329 - White
Part # 601330 - Colonial White
Part # 601330G - Grey