Port Tube

2" diameter, 4-1/2" long

  • Port Tube


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Our take on the Port Tube

by Ken Nail

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.

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  • 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

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

  • One 2" Dia x 4.5" flanged port tube

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 open the box, verify contents, 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.


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"
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Port Tube Reviews

Average Customer Review:

2 people say:

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5 out of 5

flashlight replacement

Written By Amazing J, Dallas, TX on Saturday, May 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.
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5 out of 5

Quality design

Written By Chris, Chester, VA on Sunday, December 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.
2 out of 2 people found this helpful
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For a more in-depth review and enhanced detailed information on the Port Tube, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_125M1701/Port-Tube.html ).