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Port Tube

3" diameter, 4-1/2" long

5 Reviews


Our take on the Port Tube

Building your own subwoofer enclosure? This port tube features a rolled flange to ensure a clean fit on the outside of your box. The tough ABS plastic tube features markings that make it easy for you to trim the tube to the proper length for your driver and box combination.

They work great, no issues. Fantastic price!

Ken, Olympia, WA

What's in the Box:

  • One 3" Dia x 4.5" flanged port tube

Product Highlights:

  • ABS plastic port tube for subwoofer box construction
  • rolled front flange for secure mounting
  • internal diameter: 3", external diameter: 3-1/4"
  • depth: 4-1/2"
  • warranty: 60 days
  • Our 60-day money-back guarantee

Port Tube Reviews

Average Customer Review:

5 Reviews

Standard port

Written by: Jon from Tyrone, PA on May 17, 2016

1994 Mazda B Series
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.

Nice ports

Written by: Ken from Olympia, WA on April 11, 2016

2001 Volkswagen Jetta
Crutchfield Customer Review (What's this?)

They work great, no issues. Fantastic price!

Pros: Fit nice, price

Cons: N/A

Perfect Product

Written by: Dapesa from Boulder Co on March 13, 2015

Crutchfield Customer Review (What's this?)

Perfect product, excellent quality



Port Tube

Written by: felipe from los angeles on September 5, 2014

Crutchfield Customer Review (What's this?)

amazing port, really improves sound quality and spl.

Pros: great material used for the port and very easy to use


Port tube

Written by: Ferdie from Chatham , nj on January 1, 2014

Crutchfield Customer Review (What's this?)

It's a perfect fit on the subwoofer box that I am building. I don't need to cut the length it's just fine.

Pros: Nice material

Cons: None


Hands-on research

What's in the box?

  • One 3" Dia x 4.5" flanged port tube

Product Research


Overview: This is a plastic port tube used for ported enclosures for subwoofers.


  • Cutout Diameter: 3.243"
  • Interior Diameter: 3.004"
  • Outer Flange Diameter: 3.894"
  • Length: 4.5"

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I listen to heavy metal and rap. As with most people that enjoy these genres, ported boxes sound much better [ Jon  May 04, 2016 ]