The Aura PVC vent cap model AV-4-PVC is the perfect solution to exhaust and cap a 4 in. Sch. 40 or 80 PVC Pipe. Used for commercial and residential applications, the Aura PVC vent cap has some aluminum 1-piece spun lid that prevents rain and snow from entering the PVC pipe verses the turbine vent which is open to the sky and allows rainwater to enter in "no wind" conditions. The Aura PVC vent cap has a patented, engineered design that continually exhausts air with no moving parts. The vertical louver in its inner cylinder keeps insects, birds, and animals from entering the PVC pipe, allowing optimal air flow and no maintenance. Manufactured 1-piece spun adapter is sized to fit over the straight end of the PVC pipe for an easy and fast installation. Model AV-4-PVC has a mill finish that will continually have a long-lasting clean appearance. Made of durable and rust-free aluminum, the Aura PVC vent cap's round aerodynamic design can with stand harsh weather and wind forces of up to 200 mph. Color: Green.