Free Shipping and No Hassle Returns
Free Shipping
We offer free shipping on orders over $199.*
No Hassle Returns
Don’t like it? Send it back. It’s that simple.*
Same Day Shipping
Most orders ship same day if placed by 5PM EST (M-F)
*Restrictions Apply. See Details »
Model#: RHMNRTG20151E-1

What are the different product conditions?

Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
Open Box
New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Rheem RTG20151E-1 Adjustable Vent Length

  • Rheem RTG20151E-1 Adjustable Vent Length
Sale Price:
You Save
Free Shipping
(continental U.S.)
In Stock
Ships Tomorrow


  • 7.5 in. to 22 in. overall length
  • For 3 in. / 5 in. Concentric Tankless Venting
  • Manufactured by Metal Fab, Inc.
  • Not compatible with components manufactured by Heat-Fab
  • Adjustable Vent Length - RTG20151E-1



4.3 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Yes, I would recommend this to a friend (3)
Yes, I would recommend this to a friend
Must have...
This is a great length of pipe. I have a field stone foundation wall that does not allow me to get one standard length without shimming the mounting board. This allowed for a little more flexibility. This will be my second install of a Rheem, 3rd tankless unit.
July 25, 2012
Yes, I would recommend this to a friend
very good
just what I needed
September 19, 2014
Yes, I would recommend this to a friend
great deal
easy to use,fit perfect
March 2, 2011
I think something was missing
The vent came with just 2 pieces, the inside and the outside part but they did not work together until my plumber used an adapter piece that I had mis-ordered from another firm. I think there should have been some kind of instructions for this thing, maybe all the required pieces were not shipped, or the rheem person working the help line did not give me the information that it needed an adapter.

Questions & Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 3 answers
would like to know if the adjustable vent length of 3-5in vent pipe is supposed to have the inner 3" piece along with it. Because my order did not have one included.
Dave on Nov 25, 2012
BEST ANSWER: Yes, it is supposed to include the inner 3" vent.
How is the length adjusted?
Want to use a Rheem Tankless Mid-Efficiency 95 Direct Vent Indoor unit.
My vent will be vertical and require an offset of about 13.4 inches. Want to use two 45 ells. I think the length between the two ells will be about 13 inches based on the dimensions given for the 45 ell, 8.6 rise and 3 run.
Question - How is the length adjusted?
Dolf on Jan 29, 2016
BEST ANSWER: The length of the pipe is adjusted by pulling or pushing to the desired length needed up to 13 inches.