Selkirk - 3"/4" Expandable Flexible Gas Vent Connector (Round - Type B Gas Vent)

SelkirkSKU: 3EFC-3

Sale price$78.14

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Size: 3-Inch
Length: 1 to 3 Feet
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.

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Elevate your gas appliance experience with the Selkirk Model EFC Expandable Flexible Gas Vent Connector. Engineered for use with gas-fired appliances equipped with draft hoods, this innovative connector simplifies installations, eliminating the need for cumbersome elbows. Crafted for efficiency and durability, it's the installer's choice for residential, industrial, and light commercial applications.

Designed with precision, the Model EFC is available in 3" and 4" diameters, offering flexibility in expansion from one foot to three feet or from two feet to five feet. The aluminum construction ensures rapid heating, promoting a robust draft, while the galvanized outer layer shields against outdoor elements. Say goodbye to complex installations and welcome a streamlined solution that enhances performance and durability.


  • Streamlined Installation: Say farewell to complex vent installations with the Expandable Flexible Gas Vent Connector.
  • Versatile Sizing: Available in 3" and 4" diameters, offering flexibility from one to three feet or two to five feet.
  • Efficient Draft: The aluminum liner heats up quickly, ensuring a strong and consistent draft.
  • Durability in Design: Galvanized outer layer provides protection against outdoor elements.
  • Installer-Friendly: Built-in couplers simplify connections to the appliance and Model RV.
  • Smart Choice Warranty: Enjoy peace of mind with our comprehensive warranty covering all components.
  • Industry Approvals: Listed to UL 441 in the U.S.A., ensuring compliance with industry standards.


  • Expandable and flexible connector for hassle-free installations.
  • Robust aluminum construction for efficient heating and draft.
  • Built-in couplers for easy connections to appliances and Model RV.
  • Smart Choice warranty covering all components.
  • Galvanized outer layer for protection against outdoor elements.
  • Versatile sizing options: 3" (1-3') and 4" (1-3') diameters.
  • Industry approvals, listed to UL 441 in the U.S.A.


  • Material: Aluminum construction with galvanized outer layer
  • Warranty: Smart Choice warranty on all components
  • Approvals: Listed to UL 441 in the U.S.A.
Product Code
Part No Size
173036 3EFC-3 3" (1-3') Flex Connector
173060 3EFC-5 3" (2-5') Flex Connector
174036 4EFC-3 4" (1-3') Flex Connector
174061 4EFC-5 4" (2-5') Flex Connector

Warranty: Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.


About The Manufacturer:


Selkirk products set themselves apart from the competition with their proven quality, safety, ease of installation, and lasting performance.  Selkirk is one of the most trusted brands in the industry because we stand behind everything we do.  From assisting with product selection, providing education and installation assistance, to our industry-leading warranties, we ensure your success every step of the way.

      Order Confirmation:

      Upon placing your order, you will promptly receive an email confirmation. Subsequently, we will conduct a thorough inventory check to ensure all items are in stock and available for immediate shipment. If your order aligns with the advertised delivery timeframe, we will promptly process it for shipment to our warehouse. In cases where the expected delivery time extends beyond the advertised timeframe, we will reach out to you via email and/or phone for confirmation.

      Order Shipment:

      Within one business day of your item being shipped, you will receive an email confirmation containing a tracking number. If you do not receive tracking information within six business days of placing your order, please don't hesitate to get in touch with us for assistance.

      Estimated Time of Arrival:

      Our typical delivery timeframe ranges from 2 to 10 business days. Custom-made products generally require 3 to 5 weeks for delivery. If the expected delivery date for your order would fall outside of the advertised 2-10 business day time frame, our customer service team will contact you to ensure your agreement with the revised timeline.

      Covered Areas:

      Please note that all estimated delivery dates and shipping costs advertised on our website apply exclusively to the Contiguous United States. For inquiries regarding shipping to Hawaii or Alaska, kindly reach out to our customer service team. While we do not offer direct shipping to Canada, we are more than willing to ship your order to the freight carrier of your choice.


      It is very important that you inspect the packaging of your items when they arrive and check if you received all boxes listed on the delivery receipt. If you notice any damage or shortage of packages, you must make note of it on the bill of lading, take pictures, and refuse delivery. Your note should say "refused due to damage". You must also take photos of all sides of the box and send them to us within 2 days. If there are no damages visible before opening the box, you must note "subject to further inspection may contain concealed damage". If you notice any damage after receiving the delivery, do not throw the box away, and contact us with the photos. After we receive information from you about the refused delivery or concealed damage, we immediately initiate a claim with the shipping company or with the manufacturer. After the claim is fully processed, we ship all replacements at absolutely no cost to you.

      Cancellations & Refunds:

      We offer free order cancellations before the shipping label or Bill of Lading is generated, or prior to the commencement of production for custom orders. Please note that custom-made items are not eligible for refunds once production has begun. To be eligible for a return, the item must be unused and in its original condition, with all packaging intact and in perfect condition. Orders delivered outside of the United States are not eligible for refunds. If your order arrives damaged, please refer to the "Damages" section. Our refund policy extends for 30 days. If 30 days have elapsed since your purchase, regrettably, we cannot process a refund. Prior to returning an item, please contact us to discuss shipping details. All refunds will be credited to the original credit card or PayPal account used for the purchase, within two days of receiving the returned items at our warehouse.

      Please contact for any questions regarding shipping time.

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      Customer Reviews

      Based on 1 review
      Deborah Voss
      Excellent product

      This transition flexible pipe that connects from gas pool heater to chimney stack made installing a new replacement pool heater a very easy job!

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