Message to Our Customers

Master Flow

Model # R10X8

Internet # 100136025

Store SKU # 570427

10 in. to 8 in. Round Reducer

This item has been discontinued.
The Home Depot no longer carries this specific product.

$9.48 /  each


Model # R10X8

Internet # 100136025

Store SKU # 570427

Store SO SKU # 755578

Master Flow Round Reducers are used to decrease the diameter of the pipe when making connections in an HVAC system. Hemmed collar edges make these Reducers especially strong and snug-fitting. They can also be used to increase pipe diameter if necessary.

  • Hemmed collar edges improve fit and increase strength
  • Also used to increase pipe size
  • Galvanized steel construction
  • Always seal seams with building code approved sealant or duct tape
  • Always insulate ductwork for greater system efficiency and comfort
  • Hemmed collar edges to provide strength and a snug fit

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.) 
0.91 lb 
Warranty / Certifications
Manufacturer Warranty 
Free from Manufacturer Defect at Time of Delivery. 


Rated 5.0 out of 5 by 2 reviewers.
Rated 5.0 out of 5.0 by Product does exactly what it is supposed to do. Product does exactly what it is supposed to do, reduce 10 in duct to 8 in. January 20, 2015
Rated 5.0 out of 5.0 by Reducer I actually used 3 of these as a concrete funnel for 6" steel pipe. So can be used for more than hvac duct. I used an 10 to 8...8 to 6 and 6 to 5. I work in the Facilities department for a major auto manufacturer and we install a lot of steel bollards and fill them with concrete. Works great. April 1, 2014
  • 2015-05-28T11:06:35.752-05:00
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