Straightline Performance Frogzskin Universal Circle Vent - 4.5in. O.D. x 3in. I.D. 10045 The newest technology in engineered intake and cooling vents Patent Pending design produces a thin, flexible OEM-looking vent that can be applied to most any contoured or curved surface; low-profile vent will not catch or entrap snow and debris Made of the latest technology in micro-fiber materials woven to specific quality standards Allow air-flow to reduce power robbing under-hood heat, while virtually eliminating heavy snow and ice buildup in nose and belly pan Industrial grade adhesives allow a fast and easy peel-n-stick application