Model # LW90E10X3.25

Internet # 100146831

Store SKU # 938937

Store SO SKU # 1000685114

10 in. x 3-1/4 in. 90-Degree Rectangular Elbow

$9.38 /each

Frequently Bought Together

Product Overview

This Master Flow 10 in. x 3-1/4 in. 90-Degree Rectangular Elbow is made of galvanized steel and can be cut to the angle you need to create a long-way 90-degree turn in rectangular stack duct runs.

  • Galvanized steel construction
  • Creates a long-way, right-angle turn in rectangular stack duct runs
  • Installs with sheet-metal screws
  • Can be cut as needed to form a smaller angle
  • Insulate ductwork for system efficiency and comfort
  • Seal seams with code-approved mastic, sealant or duct tape (not included)

Info & Guides

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


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

Warranty / Certifications

Manufacturer Warranty 
Free from Manufacturer Defect at Time of Delivery. 

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Customer Questions & Answers

1 Question1 Answer

Customer Questions & Answers

10 in. x 3-1/4 in. 90-Degree Rectangular Elbow
10 in. x 3-1/4 in. 90-Degree Rectangular Elbow

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1 answer

How do you cut this to make different angles

This question is from 10 in. x 3-1/4 in. 90-Degree Rectangular Elbow
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December 13, 2015
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Answer (1)

December 15, 2015
Thank you for inquiring about MasterFlow Products ... No cutting is required to change the angle for this product. While wearing gloves, grasp the opposing ends and twist in opposite directions. This will allow the joints to turn and then twist to desired angle. Please call Technical Services at 800-211-9612, M-F 8A-5P ET, with any additional questions.
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Customer Reviews

Rated 4.7 out of 5 by 3 reviewers.
Rated 5.0 out of 5.0 by Best purchase ever I Got two pcs. To make a 90 degree angle it save me time. November 13, 2015
Rated 5.0 out of 5.0 by Allowed me to keep the ducting flat and low profile inside cabinets. For a microwave hood. Allowed me to keep duct flat against the back of cabinet. October 13, 2015
Rated 4.0 out of 5.0 by Solid duct Not much you can say about a duct. Product was as expected, and fit my microwave as I needed it to. Quality is 4 out of 5 because there were some small gaps/holes at some of the corners where two pieces of metal came together. I simply used some Duct Tape (the metal tape) to make sure it was sealed up 100%. January 8, 2013
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