Square to Round Transition Box

4.96
105 Customer Reviews
SKU SDB

Price range: $28.95 through $91.95

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The FAMCO Difference

  • Quality constructed from heavy-duty 28 gauge galvanized steel
  • Primarily for use to attach a ceiling register to your air supply
  • Can be used in many applications that transition a square duct to round duct
  • Available in a variety of common sizes, see the drop down menu for all sizes available

Shipping & Returns

Estimated Arrival: Mon. May 18th - Mon. May 25th.

iDelivery dates provided are an estimate and are subject to change without notice.

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Description Product Specs Q&A Product Reviews Related Products
Description

The FAMCO SDB square to round HVAC transition Box – diffuser is designed primarily for use to attach a ceiling register to your air supply, but can be used in many applications that transition a square duct to round duct. Quality constructed from heavy-duty 28 gauge galvanized steel.

Available in a variety of common sizes, see the drop down menu for all sizes available. The FAMCO SDB square to round HVAC transition box is manufactured by FAMCO in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us.

Product Specs

Product Details
Application

Forced Exhaust, Forced Intake, In-line / HVAC / Ductwork

Reviews (105)

106 reviews for Square to Round Transition Box

4.96

Based on 105 customer reviews.

1-5 of 106 reviews

Customer Images

Image #1 from Michael Cotton
Image #1 from Shawn Greaney
Image #1 from David Watson
Image #2 from David Watson
Image #3 from David Watson
Image #4 from David Watson
Image #1 from Pat Urlacher
Image #1 from Michael Cotton

Michael Cotton

Picture is with grate over transition box.

Image #1 from Shawn Greaney

Shawn Greaney

Image #1 from David Watson

David Watson

Well made and dimensions were spot on. Replaced old hood vent, which had a 6" square exit. New vent has 6" round. And slightly offset.

Image #2 from David Watson

David Watson

Well made and dimensions were spot on. Replaced old hood vent, which had a 6" square exit. New vent has 6" round. And slightly offset.

Image #3 from David Watson

David Watson

Well made and dimensions were spot on. Replaced old hood vent, which had a 6" square exit. New vent has 6" round. And slightly offset.

Image #4 from David Watson

David Watson

Well made and dimensions were spot on. Replaced old hood vent, which had a 6" square exit. New vent has 6" round. And slightly offset.

Image #1 from Pat Urlacher

Pat Urlacher

Great product fitment was right on the money.👍👍👍👍

Image #1 from Michael Cotton
Image #1 from Shawn Greaney
Image #1 from David Watson
Image #2 from David Watson
Image #3 from David Watson
Image #4 from David Watson
Image #1 from Pat Urlacher
5 Stars98%
4 Stars1%
3 Stars0%
2 Stars0%
1 Star0%
  1. SCOTT S. —
    5.0

    • We appreciate your review on the Square to Round Transition Box, Scott. Thanks for the 5-stars!

      Daysia —
  2. Josh Bergeron —
    5.0

    • Thanks for taking the time to leave a review on the Square to Round Transition Box, Josh!

      Daysia —
  3. Anonymous —
    5.0

    • Thanks for sharing your review on the Square to Round Transition Box.

      Daysia —
  4. Anonymous —
    5.0

    • Thanks for sharing your review on the Square to Round Transition Box.

      Daysia —
      5.0

    • Thanks for sharing your review on the Square to Round Transition Box.

      Daysia —
      5.0

  5. Great quality and fast shipping

    Nathan Wolter —
    5.0

    • Thanks for taking the time to leave a review on the Square to Round Transition Box, Nathan! We are happy to hear it is of great quality.

      Daysia —
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Questions & Answers (1)

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Q
Does the size pertain to the round duct size? Raul asked on April 19, 2022
A

Yes, the "size" selection refers to the round hole size. The "dimensions" selection would be for the square part of the box.

 answered on April 19, 2022 verified owner
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Q
I have a 18" Round Plenum, need to adapt to Rectangular plenum. is this made to order ? John Taylor asked on August 23, 2021
A

These products are currently manufactured in our Meridian, Idaho factory - the sizes we are able to manufacture are those shown in the dropdown menu.

 answered on August 30, 2021 verified owner
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Q
Can these be used for a bathroom exhaust fan intake opening where moist air will travel through the vent? Stephanie asked on August 16, 2021
A

We would recommend asking your exhaust fan manufacture for their recommended install method.

 answered on August 25, 2021 verified owner
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Q
I'm looking for something like this but without the "box". I need need to connect round flexible duct to a rectangular hole on the main trunk, but with the "box" there's no mating surface (I need flat sides to secure with sheet metal screws). I suppose I could break the welds and hammer the sides flat but do you have a product like I'm describing? I can find them in plastic but would prefer galvanized aluminum. Thanks. Matt asked on August 12, 2021
A

This is not something that we currently supply or manufacture.

 answered on August 25, 2021 verified owner
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Q
I need a 13"×14"×6"round Perry asked on July 30, 2021
A

This is not a size we are currently able to manufacture, unfortunately.

 answered on August 5, 2021 verified owner
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