HVAC Couplings & Adapters

of 160 products
6034
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
6106
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Triple Wall
5880
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
55427
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Manufacturer : M&G Duravent
  • Color : Black
  • Product : Couplings and Adapters
  • Use : Ducting and Venting
5894
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
  • Reducing : Reducing
5879
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
5881
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
5840
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
5890
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
  • Reducing : Reducing
5702
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • Product : Couplings and Adapters
  • Use : Ducting and Venting
  • Style : Single Wall
5893
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
  • Reducing : Reducing
6089
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Triple Wall
  • Reducing : Reducing
6035
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
5917
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
6033
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
44984
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • Manufacturer : Norwesco Fluid
5892
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
  • Reducing : Reducing
5701
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Use : Ducting and Venting
  • Style : Single Wall
6041
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Triple Wall
  • Reducing : Non-Reducing
20109
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
  • Reducing : Reducing
5882
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Double Wall
5915
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Reducing : Non-Reducing
5672
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Use : Ducting and Venting
  • Style : Single Wall
  • Reducing : Reducing
6105
  • Heating & Cooling
  • PlumbersStock
  • HVAC Couplings & Adapters
  • PlumbersStock/Heating & Cooling/HVAC Fittings/Single-Wall Fittings
  • HVAC Fittings
  • PlumbersStock/Heating & Cooling
  • M&G Duravent
  • PlumbersStock/Manufacturers/HVAC Brands/M&G Duravent
  • Single-Wall Fittings
  • PlumbersStock/Heating & Cooling/HVAC Fittings
  • Product : Couplings and Adapters
  • Manufacturer : M&G Duravent
  • Use : Ducting and Venting
  • Style : Triple Wall
of 160 products

About Duct Couplings and Adapters

Update your home with couplings and adapters, which are used for connecting ductwork. We have hundreds of options to choose from when it comes to single-wall fittings. Every home with a central HVAC system has a number of duct adapters and couplings.

HVAC fittings come in a variety of shapes and sizes and you need the right configuration for the most efficient system. Here at PlumbersStock, we have dozens of couplings and adapters that will work for almost any project imaginable.

What Are Couplings and Adapters?

Within HVAC ductwork you will find many instances where connecting fittings are required to join two vents/pipes. Couplings generally imply a connector that joins two similar sized vents. Contrast that with an HVAC adapter, which serves as a reducer or increaser to connect different-sized venting or pipe.

Finding the Best Connectors

When looking for ductwork coupling and adapter parts you want to find products that are built to last. At PlumbersStock, we only offer products that are strong, resilient, and durable. Our HVAC couplings and adapters are also leak-proof, rot-proof and should last for many years. These are all important things to look for when searching for parts for your home.

You know that when you buy from us you are getting a product that will not fail you in a time of need. The duct connectors you will find on our site are made with quality and precision. They are built to withstand the elements surrounding it and should perform at their very best. If you have any trouble finding the right HVAC adapter for your system, then please contact a member of our team through chat, phone, or e-mail support.

Duct Couplings at PlumbersStock

Here, you will discover a large selection of products to choose from:

  • Plastic or Cast Iron Coupling
  • Increaser B-Vents
  • Firestops
  • Oval to Round Adapters
  • Double Wall Close Adapters
  • Aluminum Dryer Boxes
  • Wall Reducers
  • Combustion Air Stove Top Kit
  • Storm Collars

We offer savings on DuraVent couplings and adapters so that you know you are buying quality.

Buy Duct Couplings, Adapters, and More

On our site you will find everything you need when it comes to HVAC connectors. If you are looking for a product that is built to last, built to withstand the elements around it, and built to perform at its very best, then you have come to the right place. At PlumbersStock, we have searched high and low for some of the very best parts you will find on the internet today. As you scroll through our HVAC couplings and duct adapters you will discover why individuals are choosing us for all their fittings online.

Shopper Award