Skip to product information
1 of 2


Rinnai Vent Pipe Extension for EX38CT

Rinnai Vent Pipe Extension for EX38CT

2 reviews
Regular price $171.00
Regular price Sale price $171.00
Sale Sold out
  • Free Shipping on Orders Over $300
  • Same-Day Order Processing
  • Easy Monthly Installments Starting at 0% APR*
Got a question?
• Text or call 888-992-1556
• Email
• Start a live chat

Our team is available to serve you 8:00 AM - 11:59 PM ET, 7 days a week.

If necessary, an extension kit can be used to extend the exhaust line and air intake hose between the flue manifold and the appliance. The maximum vent length allowed is 13 feet, and the maximum vertical length allowed is 8 feet.

What's Included

FOT-102 ( 11”–20" Vent Pipe Extension )
  • (1) Pipe Stopper A
  • (1) Pipe Stopper B
  • (1) Hose Joint
  • (1) Top Stopper
  • (2) Pipe Clamp Sets
  • (2) Wall Fixtures
  • (6) Screws
  • (2) Nuts
FOT-103 ( 21”–40" Vent Pipe Extension )
  • (1) Pipe Stopper 
  • (1) Pipe Stopper B
  • (1) Hose Joint
  • (1) Top Stopper
  • (3) Pipe Clamp Sets
  • (3) Wall Fixtures
  • (9) Screws
  • (3) Nuts
FOT-114 ( 60”– 80" Vent Pipe Extension )
  • (2) Pipe Stopper A
  • (1) Pipe Stopper B
  • (1) Hose Joint
  • (1) Top Stopper
  • (4) Pipe Clamp Sets
  • (4) Wall Fixtures
  • (12) Screws
  • (4) Nuts


11”–20" Vent Pipe Extension for EX38CT
  • Exhaust pipe (adjustable): 12" - 20"
  • Air intake hose: 29.5"
  • Product Height: 2.7 in
  • Product Width:  9 in
  • Product Depth:  22 in
  • Product Weight: 2.2 lb
21”–40" Vent Pipe Extension for EX38CT
  • Air intake hose: 49.2"
  • Exhaust pipe (adjustable): 21" - 40"
  • Product Height: 3 in
  • Product Width:  9 in
  • Product Depth:  31.5 in
  • Product Weight: 1.5 lb
60”–80" Vent Pipe Extension for EX38CT
  • 1 Hose joint
  • 3 Pipe stoppers
  •  29.5" Air Intake Hose
  • Product Weight: 2.5 lb



To connect with a Rinnai-trained installer, you can utilize the Rinnai Dealer Locator by visiting the link: Alternatively, you can directly reach out to Rinnai's dedicated customer support team via the Toll-Free Number: 1 (800) 621-9419.

View full details
Customer Reviews
5.0 Based on 2 Reviews
5 ?
4 ?
3 ?
2 ?
1 ?
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Great price/great service

When looking for a part for my Rennai propane heater installation I found the price that US Fireplace Store was by far the best. On top of that, the customer service was excellent. If the need arises, I will definitely order from them again.

Sue H.
United States United States
Great customer service

Great customer service! I appreciate the follow-up for everything including the shipping.

Sue H.
  • Researched and ordered my fireplace from US FIreplace Store. Pricing was a fair value however, the customer service was EXCELLENT! I had an issue with the direct vent venting. I called US Fireplace and the correct items were sent out the next day AND Janessa stayed on top of my return authorization and sent me the permissions and documents I needed to return the incorrect item and no cost to me, including return shipping. Overall, I am a very satisfied customer and my fireplace looks and operates flawlessly. I am glad that I selected US FIreplace to source my direct vent fireplace. Thank you for the great service.


    Monteagle, TN

  • I had placed an order, through Lowe's Home Improvement, for an Electric Firebox: Revillusion RBF42. Ordered 1st part of January. Was told I would have it in 3 weeks. When checking to see is it came in, was told it was delayed to 3/15. Was then told is was delayed until 4/25. Waited until 4/27 to check on it. Was then told it was now delayed until August. This firebox was going in a new Sun Room addition. I could not get my final inspection until the Firebox was installed. I went on line and googled for this same product. US Fireplace Store web site was given to me. This was on a Saturday. I call and reached a very nice man. Explain what I was look for. He checked and told me they had 30 of them in stock. I almost fell out of my chair. I clarified with him the product I was wanting. I ask how soon could I get it. He told me it would ship today. Again, was amazed. It arrived on the following Monday. What a pleasure and a relief working with US Fireplace Store and their employees. Exceed my expectations.

    Thomas W.

    Fort Mill, SC

  • Great prices, quick delivery and fast hassle free services on the issue I encountered. I had purchased an electric fireplace unit that would not fit into the existing fireplace space. With one email I was able to get the wrong fireplace refunded and picked up at my home at no extra cost and the new one I purchased and delivered free of charge. Great company.

    John P.

    Denvers, MA

1 of 12
  • Live Chat Support

    No chatbots. Speak with a human. Average response time is 48 seconds.

  • Easy Returns

    Need to return the merchandise? We accept returns for 30 days from the date of delivery.

  • 7 Days/Week Service

    We're here to help on live chat, email & phone. 8:00 AM - 11:59 PM Eastern Time.

  • 20,000+ Products

    Best selection of hearth & heating products on the internet. Fireplaces, stoves, fire pits, heaters, log sets and more.

  • Pay Over Time

    0% APR is available for 3 and 12- month financing.* See if you prequalify today.

  • Staff Picks

    Check out the Staff Picks collection. See the top products selected by our team.