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Port Tube

3" diameter, 4-1/2" long

Item #: 125M1702

In Stock

3 Reviews | Ask Questions

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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.

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:

3 Reviews

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.

Customer Q&A