About This Product The Aura PVC Vent Cap Model AV-4-PVC-BL 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 an 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 rain water 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 louvers 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-BL is powder coated with an electrostatic charge in Black Semi-gloss finish. Powder coating is significantly greater at resisting, scratching, chipping, and oxidation. The powder coating finish adheres extremely well and is difficult to remove than wet paint which adds to the vents durability and 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. Highlights Optimum solution for capping and exhausting a PVC pipe Model AV-4-PVC-BL inside diameter of adapter: 4.532 in. Durable, light weight and rust free aluminum construction Keeps out insects, rain, snow and ice from entering the PVC pipe Helps remediation systems to release vapors in landfills, gas stations, contaminated soil sites, chemical containment bunkers and groundwater sites Used exclusively to cover PVC pipes Powder coating finish adds to the durability and long lasting appearance Screws are not included