Crutchfield Customer Review (What's this?)
Standard port. Does what you expect. A little noise But if your box is in your trunk you never hear it. Adding a port to a box definitely increases bass output from almost any box. Crutchfield should offer a better selection of ports. Longer ports are often needed with a smaller box. Flared ports eliminate port noise. Neither of these are offered.
Pros: Flanged too easy to install
Cons: Very small amount of port noise.