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Port Tube

2" diameter, 4-1/2" long

3 Reviews | 1 question - 1 answer


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.

Product Highlights:

  • ABS plastic port tube for subwoofer box construction
  • rolled front flange for secure mounting
  • internal diameter: 1-15/16", external diameter: 2-1/8"
  • depth: 4-1/2"
  • warranty: 60 days
  • Our 60-day money-back guarantee

Good product

Dervon white, North Carolina

What's in the Box:

  • One 2" Dia x 4.5" flanged port tube

Port Tube Reviews

Average Customer Review(s):

(3 Reviews)


Dervon white from North Carolina on 11/15/2015

Crutchfield Customer Review (What's this?)

Good product



flashlight replacement

Amazing J from Dallas, TX on 5/24/2014

Crutchfield Customer Review (What's this?)

It fits perfectly tight like I like it. Not as soft as the original but much more durable. It popped right in and I finished very fast! Great product.



Quality design

Chris from Chester, VA on 12/14/2008

Crutchfield Customer Review (What's this?)

Well its a port tube, but a quality one. Easy to cut to your desired length, the flange on the top will cover up any "not so perfect cut out hole", but i used a hole saw to cut the hole for it.




Hands-on research

Product Research


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


  • Cutout Diameter: 2.208"
  • Interior Diameter: 1.965"
  • Outer Flange Diameter: 2.87"
  • Length: 4.508"

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?

Custom Box for Bandpass [ BRIAN  Jun 13, 2017 ]
Rebuilding Sub box [ John  Mar 10, 2017 ]

1 question already asked

I forwarded your question to an Advisor and they responded with the following: I do not show that this product is recommended for a particular box. Given that it is only 4" long, I don't see why it wouldn't work in any size custom box build. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Jan 20, 2015 ]  Staff