$925
- Used to increase or decrease pipe size
- Durable galvanized steel construction
- Can be crimped if needed
- View More Details
Product Overview
The Master Flow 6 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 6 in. pipe to a 4 in. pipe in an HVAC system. It is suitable for most HVAC applications.
- 30-Gauge, galvanized steel construction for durability
- Hemmed collar edges for an improved fit and increased strength
- Connects 6 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)
Info & Guides
Compare Similar Reducers
Top Rated | Best Seller | Top Rated |  | |
| Brand | Master Flow | Master Flow | Master Flow | Master Flow |
| Name | 5 in. to 4 in. Round Reducer | 6 in. to 4 in. Round Reducer | 7 in. to 6 in. Round Reducer | 6 in. to 5 in. Round Reducer |
| Price | $865 | $925 | $1032 | $1032 |
| Ratings | (103) | (185) | (112) | (78) |
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
Product Depth (in.)
6
Product Height (in.)
6
Product Width (in.)
6
Details
Brand/Model Compatibility
Universal
HVAC application
All HVAC types
Material
Galvanized Steel
Product Weight (lb.)
0.54
Returnable
90-Day
Warranty / Certifications
Manufacturer Warranty
Free from Manufacturer Defect at Time of Delivery.
Questions & Answers
Typical questions asked about products:
- Is the product durable?
- Is the product easy to use?
- What are the dimensions of the product?
Customer Reviews
Apr 15, 2020
The dimensions were acceptable and it worked. What more can you ask of a static piece of metal.
The dimensions were acceptable and it worked. What more can you ask of a static piece of metal.
by
Sep 13, 2016
One part of the puzzle
We're building a dust collection system for a 700 sq.ft. wood shop at Milwaukee Makerspace; a community workshop and non-profit group for makers, crafters, etc. I've bought seven or eight of these so far. The main duct to the dust collector is 6" round and the takeoffs are 6" wye fittings with one of these reducers on the leg. We attached the reducers to the wyes with self-tapping sheet metal screws.
by
Oct 16, 2021
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Oct 6, 2021
by
Oct 6, 2021
It didn’t work the mouth of 6” didn’t fit the...
It didn’t work the mouth of 6” didn’t fit the other 6” to make it to 4” .
by
Oct 5, 2021
by
Sep 22, 2021
it fit with bath room exhaust fan that has 6...
it fit with bath room exhaust fan that has 6 inch exhaust and and was able to connect to 4 inch corrugated line
by
Sep 21, 2021
Great experience buying online and picking up in their lockers....
Great experience buying online and picking up in their lockers. Quick and easy!
by
Aug 27, 2021
Very cheap, no crimped end...
Very cheap, no crimped end
by
Jul 8, 2021
Works as expected with my portable AC....
Works as expected with my portable AC.
by
May 19, 2021
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
May 18, 2021
by
May 18, 2021
Good product. Easy to use!!!...
Good product. Easy to use!!!
by
Apr 22, 2021
by
Apr 10, 2021
Only thing is its too high for inside cabinet installation....
Only thing is its too high for inside cabinet installation.
by
Apr 1, 2021
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Mar 31, 2021
It flows like the farts from my grandpa's rear end!...
It flows like the farts from my grandpa's rear end!
by
Mar 30, 2021
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Mar 18, 2021
I used two of these to hold a 6" duct fan in a 4" solar heater pipe in my greenhouse and it works...
I used two of these to hold a 6" duct fan in a 4" solar heater pipe in my greenhouse and it works great. I have a fan speed control on the fan which helps with air flow. Duct tape the seams and it's "westward ho".
by
Mar 17, 2021
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Feb 19, 2021
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Feb 17, 2021
by
Jan 31, 2021
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Dec 13, 2020
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Nov 13, 2020
by
Nov 10, 2020
by
Oct 23, 2020
It work perfect and no issues....
It work perfect and no issues.
by
Sep 2, 2020
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Aug 15, 2020
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Aug 5, 2020
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
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