Master Flow 7 in. to 4 in. Round Reducer

Item # 3570315 | Master Flow Part # R7X4 | UPC Code 050206925980 | UNSPSC Code 40141900
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Product Overview

The Master Flow 7 in. x 4 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 7 in. pipe to a 4 in. pipe in an HVAC system. It is suitable for most HVAC applications.

  • Hemmed collar edges for an improved fit and increased strength
  • Connects 7 in. pipe to 4 in. pipe in duct run
  • Seal seams with code-approved mastic, sealant or duct tape (sold separately)
  • Always insulate ductwork for greater system efficiency and comfort (insulation not included)


Brand/Model Compatibility
Duct Size (in.)
General Material
Galvanized Steel
HVAC Product Type
Manufacturer Warranty
Free from Manufacturer Defect at Time of Delivery.
Product Depth (in.)
Product Height (in.)
Product Weight (lb.)
Product Width (in.)


Free from Manufacturer Defect at Time of Delivery.

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