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12.5" to 8" Inch Round Duct Reducer - Galvanized Steel Pipe Increaser - Coupling for Round Duct Ventilation Systems - Heating & Cooling, HVAC

  • Based on 172 reviews
Condition: New
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Availability: Only 7 left in stock, order soon!
Fulfilled by Amazon

Arrives Monday, Sep 8
Order within 22 hours and 34 minutes
Available payment plans shown during checkout

Size: 12.5 Inch to 8 Inch


Features

  • This is a very practical, robust, solid duct reducer or increaser which can be used when connecting two different size solid or flexible ducts.
  • Material: Galvanized Steel. Smallest opening dimensions: 7.87" Inches. Biggest opening dimensions: 12.4" Inches. Both openings are male fit.
  • Raised lip on both openings allows connecting ducts to get a better grip. Once installed, reducer should be secured with clamps or any preferred fastener.
  • Wide application range: can be used with HVAC systems, bathroom extractor fans, inline ventilators, cooker hoods, tumble dryers, hydroponics, kitchens or, anywhere else in the apartment, home or office space.
  • HVAC OV offers variety of sizes and configurations for hose / pipe / duct connecting.

Description

HVAC OV works with manufacturers, markets and distributes products and system solutions for simplified construction and improved indoor climate. // The products are characterised by their quality, ease of assembly and consideration towards the environment. // We simplify construction // At HVAC OV, we simplify construction because it is in human nature to build. By simplifying in every stage, we make it easier to install seamlessly. We develop products with people in mind. We offer solutions that meet the demands for comfort, simplicity and aesthetics. // We are driven by a strong passion and desire to continuously offer improvements. // Partly for all the customers and partners who use our products and solutions, but also for the people who live and work in buildings that use our products. We simplify construction and help to create a healthy indoor climate. // Ideal for all tumble dryer vent pipes, hoses, bathroom extractors & vents, air conditioning and heating units, kitchen vents & fans, all home wall and ceiling vents, heat transfer and ventilation systems, gas & electric dryers, cooker hood extractors, as well as a wide variety of industrial uses.

Size: 12.5 Inch to 8 Inch


Material: Galvanized Steel


Brand: HVAC OV


Color: Gray


Item dimensions L x W x H: 12.5 x 12.5 x 7.07 inches


Connector Type: Reducer


Exterior Finish: Galvanized


Number of Pieces: 1


Manufacturer: HVAC OV


Size: ‎12.5 Inch to 8 Inch


Material: ‎Galvanized Steel


Brand: ‎HVAC OV


Color: ‎Gray


Item dimensions L x W x H: ‎12.5 x 12.5 x 7.07 inches


Connector Type: ‎Reducer


Exterior Finish: ‎Galvanized


Number of Pieces: ‎1


Manufacturer: ‎HVAC OV


Item Weight: ‎1.62 pounds


Product Dimensions: ‎12.5 x 12.5 x 7.07 inches


Item model number: ‎2


Shape: ‎Round


Item Package Quantity: ‎1


Measurement System: ‎IN


Special Features: ‎Easy to Install


Included Components: ‎Round Duct Reducer


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: September 12, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Well made, excellent product
Size: 4" Inch to 3" Inch
This product is well constructed and worked as intended. Very easy to install and sized perfectly. Reasonably priced and it should last for as long as the ceiling fan does.
Reviewed in the United States on April 15, 2025 by J. Hanney

  • 3” to 4” Adapter
Size: 4" Inch to 3" Inch
I needed a 3” to 4” converter was needed when our heater was replaced. Great quality, worked perfectly, affordable, easy to install/fit. Fast received. I recommend it and seller.
Reviewed in the United States on May 29, 2025 by Spanky63

  • Perfect fit
Size: 4" Inch to 3" Inch
Worked perfect, great product and great price
Reviewed in the United States on April 28, 2025 by Houston

  • Well made
Size: 4" Inch to 3" Inch
This is a well made item. I'm giving it a 4 star because the outlet side is the same as the vent tube that I needed to connect which is 3in diameter. Also, that end was folded into a lip that made the outside diameter even bigger. I decided to unfold the lip then made several cuts around in order to make the diameter smaller to fit the vent pipe. ... show more
Reviewed in the United States on April 30, 2025 by Amazon Customer

  • excellent fitting
Size: 4" Inch to 3" Inch
small and compact so it worked perfectly in the tight space well made
Reviewed in the United States on March 30, 2025 by mike j

  • Exactly what I need
Size: 4" Inch to 3" Inch
Well made and measurement was exact.
Reviewed in the United States on April 4, 2025 by Amazon Customer

  • As described!
Size: 10 Inch to 6 Inch
Point in description and well made. It worked perfectly. Price is good.
Reviewed in the United States on July 10, 2025 by Tammy

  • Exact fit
Size: 8 Inch to 6 Inch
Works great and great fit to existing pipe
Reviewed in the United States on November 11, 2024 by Russell M. Paramore

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