Square to Round Transition Box
$19.69 – $95.45
- 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
Questions and answers of the customers
I have a 18" Round Plenum, need to adapt to Rectangular plenum. is this made to order ?
Q I have a 18" Round Plenum, need to adapt to Rectangular plenum. is this made to order ? answer nowAsked on August 23, 2021 3:21 pmA
These products are currently manufactured in our Meridian, Idaho factory - the sizes we are able to manufacture are those shown in the dropdown menu.
Can these be used for a bathroom exhaust fan intake opening where moist air will travel through the vent?
- 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.
- I need a 13"×14"×6"round
Q I need a 13"×14"×6"round answer nowAsked on July 29, 2021 7:24 pmA
This is not a size we are currently able to manufacture, unfortunately.
I need a 24" x 24" and 14" diameter transition box.
Do you have this size?
Q I need a 24" x 24" and 14" diameter transition box. Do you have this size? Thanks answer nowAsked on June 16, 2021 11:48 amA
Yes - this is a size we are currently able to manufacture, you can select these dimensions in the dropdown.
If I order today ..which one is the delivery date? thanks
Q If I order today ..which one is the delivery date? thanks answer nowAsked on June 12, 2021 12:58 pmA
Current manufacturing and shipping estimates are given in the shopping cart and at checkout.
I need a 10"w x 3-1/4 to a "6 inch-round
Q I need a 10"w x 3-1/4 to a "6 inch-round answer nowAsked on May 18, 2021 5:49 pmA
This is not a size we currently manufacture, unfortunately.
Do you make w 16”. L18” round 14. Duct adapter
Q Do you make w 16”. L18” round 14. Duct adapter answer nowAsked on May 2, 2021 12:06 pmA
We currently only manufacture the sizes shown in the dropdown menu
Do you make these in 18Wx18Lx12D
Q Do you make these in 18Wx18Lx12D answer nowAsked on April 25, 2021 1:05 pmA
Yes - all sizes available can be selected in the dropdown on the product page.
Could we order this for a custom size box of 16 x 25 in square and 8-inch diameter circle? Thank you.