Parts ExpressPort Tube 4-5/16 ID Adjustable

The quality of the ports or good great value for the money

Excellent design and extremely tough material the tube slides in and out as the inside piece is a little bit bigger like a sleeve but it's not flimsy. And is super easy to take out and adjust to get different notes from your box. 👍👍👍

I added these to a sealed box I had built, decided to go ported. These ports are really nice, I needed 8” depth, and having the port be adjustable made it work perfect.

Sturdy construction and I was able to tune my enclosure with the adjustable port length.

Does what it does