Model # 90E12

Internet #100163805

Store SKU #570540

Store SO SKU #1000683988

null 12 in. 90 Degree Round Adjustable Elbow

12 in. 90 Degree Round Adjustable Elbow

  • Adjustable to any angle through 90°
  • 28-Gauge galvanized steel
  • Commonly used on HVAC applications
$1161 /each
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Frequently Bought Together

Product Overview

Master Flow's adjustable elbows are used to make turns in runs of round pipe and flexible duct through 90 degrees. They have a sturdy galvanized steel construction and are simple to adjust. They are also crimped on one end to easily fit into a pipe or other fitting of the same diameter.

  • Used to make angular or gradual turns in runs of pipe
  • Adjustable to any angle through 90 degrees
  • 30 gauge, galvanized steel construction
  • Always seal seams with building code approved sealant or duct tape
  • Always insulate ductwork for greater system efficiency and comfort

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Brand/Model Compatibility
HVAC application
All HVAC types
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
Free from Manufacturer Defect at Time of Delivery.

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Customer Questions & Answers

Can I cut the bottom to make it bigger? Cuz I'm not able to put it fully over the other part .

Asked by: Trinidad
It would be easier to use pliers to crimp the end you are inserting into it. Cutting will lead to the metal splitting over time and leaking.
Answered by: Ryan
Date published: 2016-09-23
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Customer Reviews

12 in. 90 Degree Round Adjustable Elbow is rated 3.9 out of 5 by 12.
Rated 5 out of 5 by from A bit stiff Elbow was shipped straight and had to have the sections turned to form the 90. 2 of the joints spun with expected effort. The 3rd joint was rather stiff and took a lot of effort, but did finally spin. Nothing unexpected with sheet metal elbows, however the size makes it more challenging.
Date published: 2016-09-23
Rated 1 out of 5 by from sheetmetal gauge is thin, distorts easy. Note: piece comes straight, you need to people to turn s... sheetmetal gauge is thin, distorts easy. Note: piece comes straight, you need to people to turn sections to create up to 90 degree angle. Spend the money, get better quality product and save yourself the headache.
Date published: 2016-12-29
Rated 1 out of 5 by from 9 degrees maybe. Certainly not 90. It was received in a straight profile. First try with helper we could not adjust. Lubed all of the joints several times in and out and still could not adjust (by myself). To gain leverage it was attached to the square register box. It spun in the box so I attached it to the box with screws. One section moved then finally another but it did bend the box some. I put a hole and rod through the third section as a handle to see if I could get it to budge. No luck. I surrender. Maybe it can be used to pot a plant,
Date published: 2016-08-05
Rated 4 out of 5 by from Good Product, good price However, It was not carried at my local store and I had to drive to another town to pick them up. Also, they only carried the elbows in twelve inch. I had to go to two different much higher priced stores for 12" take-offs and some 12" in duct pipe. Wasted a whole day rounding up the materials I needed for the project. Realy wish HD had carried the whole line of 12" ducting materials. Side note, applying some air tool oil to the joints from the inside made adjusting the angle of the elbow much easier.
Date published: 2012-02-15
Rated 3 out of 5 by from Difficult to rotate. Although in the end this product served it's purpose, unlike some others, I had a very difficult time getting the seems to turn! Even after applying a light coat of lubricant to them, they still proved most stubborn. In fact, one of the two I used had to be disassembled (which I do not recommend) and reassembled in the position needed. I have worked with these types of fitting in the past, albeit in smaller sizes (four, six and eight inch), and have never had such a difficult time getting them to move. Perhaps I just got two from a bad batch. Regardless, I would be reluctant to use them again.
Date published: 2014-11-23
Rated 5 out of 5 by from Works great and great customer service! Good quality and worked great ... Easy ordering on line... pickup was a breeze.
Date published: 2015-12-14
Rated 4 out of 5 by from 0 to 90 Degrees Been re-fitting my duct system and have a few off the wall connections that are totally 0-90 degrees. These can be Adjusted to turn down on one section, to the right on the next, and straighten out for the last. They are far more durable then using flexible 12 inch ducts and will out last the house.
Date published: 2013-05-12
Rated 5 out of 5 by from This item is easy to use very happy with it. easy to use. very adjustable for difficult places
Date published: 2013-11-19
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