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Port Tube

2" diameter, 4-1/2" long

Item # 125M1701

Item # 125M1701

In stock

About 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
  • MFR # M1701

What's in the box:

  • One 2" Dia x 4.5" flanged port tube

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More details on the Port Tube

Mark G.

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"

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Customer Q&A

Crutchfield asked: Why did you buy this?
Building a box for my 8" subwoofer. [ Shawn C.  Jun 04, 2018 ]
Custom Box for Bandpass [ BRIAN  Jun 13, 2017 ]
Rebuilding Sub box [ John  Mar 10, 2017 ]

1 question already asked

What size box and sub would this be ideal for?
[ Anthony  Jan 15, 2015 ]
1 answer
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

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