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  • Duct Boot
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  • Duct Boot

Duct Boot

  • Various of HVAC Fittings available
  • Better quality with advanced machines
  • More than 1000 projects experiences

Biyang Duct Boot is a type of ducting fittings designed to connect different parts of HVAC systems, such as between the duct and register, from the round duct to the square duct and so on.  With more than 10 years of experiences and working in thousands of projects, Biyang has developed its own way to make the air duct boot with lower cost and easy adaptability.

As a professional Duct Boot Supplier, Biyang has many types.  Biyang Duct Boot can be made out of galvanized steel, stainless steel 201, stainless steel 304, stainless steel 316 and so on to fit the different environmental requirements.  You can easily get Biyang’s recommendations about the rust resistance and durability requirements for your own products if you have doubts about the selecting of materials.

Biyang Duct Boot includes a variety of products, with different sizes for rectangular parts, depths, duct boot extensions, and round part diameters in a duct boot construction.  You will need to choose the right product based on your own applications.

Our duct boot can work as ceiling register boot as well as the floor register boot. Custom made is always the best choice for the duct boot if you have your own projects instead of buying from the local shop.  With the custom, you will get the perfect design with limited space and effective working conditioning.  For existing ones, it is not easy for you to meet all your demands.

Most Chinese Duct Boot suppliers are using the local brands machines for production, but Biyang is working based on more efficient machines from importing, such as the Spiro group.  That is also why Biyang Duct Boot has a nicer outlook.

Biyang duct boot can easily be attached to the ducts with simple nail or screws.  Our design and assembly kit help save your time.  Now lots of our duct boots are used in the Japanese projects, some even in military bases.

As an early member of China CRAA, Biyang is always attaching importance to improving the production of HVAC products.  Your personal visiting will enhance your understanding of our quality and efficiency.  Welcome to inform us for factory visiting.

ProductDuct Boot
MaterialGalvanized steel, stainless steel

Duct Boot: The Ultimate Guide

What is Duct Boot?

A duct boot is a component of a ventilation system whose function is for convertingductwork to a vent for proper ventilation of a room. It is normally rectangular on one side and circular on the other end.

 Duct boot

 Duct boot

What is Duct Boot used for?

  • A duct boot is used in the conversion of ductwork to a vent.
  • It connects to the round ductwork while the rectangular end faces the room assisting in air circulation.

Which Material is Duct Boot made from?

The materials that are used in the manufacturing of duct boot include:

  • Galvanized steel is common since it does not easily rust due to the presence of the zinc coating.
  • This also minimizes the painting cost.
  • Aluminum is a relatively light material and easy to install.
  • Also, you can easily customize your duct bot using this material.
  • Phenolic and Polyurethane panels contain aluminum finishes on either side which come in different thicknesses.
  • Fiberglass duct board materials which offer internal thermal insulation while absorbing sound n its outer surface.
  • This offers a noise-free operation of the ventilation system.
  • Flexible material which consists of a flexible plastic material covering a metallic wire coil that helps in shaping.
  • They are frequently used in the attachment of outlets circulating air to rigid ductwork.

How do you Specify HVAC Duct Boot?

You need to understand the size and design of your HVAC if you want to specify which HVAC duct boot to purchase.

Does Duct Boot have Standard Design Configurations?

No. Duct boot does not have a standard design configuration.

The design configuration will depend on the type and size of your ventilation system.

How do you Seal Duct Boot?

Sealing of a duct boot is through the use of an aluminum tape or mastic.

Mastic is the preferred over the aluminum tape as it is easy to apply even on the unreachable areas of the duct boot.

The aluminum tape or mastic is wrapped around the duct boot while ensuring there is no leakage.

Thereafter, there is an application of insulation tape around it.

What is a Duct Boot Register?

A duct boot register is that part of a duct boot whose function is to control the ventilation of a room.

It contains moving parts that open and close to regulate the volume of air flowing into a room.

The duct boot register is a critical element in ensuring the efficiency of an HVAC system.

How many Types of Duct Boots are there?

The common types of duct boots include:

  • Angle duct boot offers a right angle that allows ductwork to vertically change direction from horizontal.
  • End duct boot is of common use on termination areas of the ventilation system by converting ductwork into a vent.
  • Straight duct boot helps in connecting ductwork that is running straight before conversion into a vent.

What is the difference between Duct Boot and HVAC Transition?

AnHVAC transition helps in changing the shape or size of ductwork.

A duct boot helps in changing the direction of the ductwork from being vertical to horizontal and vice versa.


 Duct transition

Duct transition

What should you Consider when Buying Duct Boot Register?

When buying a duct boot register, it is important you consider the type of your HVAC system.

This should include size, applications and where you intend to install the HVAC system.

How many types of HVAC Ducts are there?

There are two types of HVAC ducts available, that is, flexible duct and rigid HVAC ducts.

Flexible HVAC ducts consist of a tube-shaped wire which is covered using a flexible plastic that is durable and insulated.

It is an ideal duct type for tricky areas that allows for bending.

These ducts are relatively cheaper and also easier to install when you compare to the rigid ducts.

Various types of rigid ducts are available including:

  • Sheet metal ducts which utilize aluminum and galvanized steel.
  • They are relatively cheaper and easy to install.
  • They also hinder the growth of dangerous molds due to their porous surfaces.
  • Fiberglass lined ducts consist of both an external and internal lining of fiberglass.
  • They are common in commercial buildings as they absorb noise from the ventilation system.
  • They are however health hazards in the long run since the fiberglass deteriorates over time releasing them to the environment.
  • Fiberboard ducts consist of compressed fiberglass which is bonded with resins.
  • This board is then covered using a foil sheet to make it moisture free.
  • Due to the insulation property, it is an ideal duct for a ventilation system.
  • However, they easily form a breeding ground for dangerous molds, especially in humid environments.

What are the Benefits of Duct Boot?

  • It helps in the changing of the direction of the ductwork from horizontal to vertical
  • Helps in the ventilation of a room by controlling the volume of air flowing
  • Duct boots are vital in ensuring the proper functioning of the ventilation unit.

How does End Boot compare to Angle Boot?

An angle duct boot helps in changing the direction of the ductwork to vertical from horizontal.

An end duct boot helps in changing the ductwork to a vent.

An angle duct boot is common within the structure of the ductwork while you will find an end duct boot at the terminal of the ductwork.

What is the Function of Supply and Return Duct HVAC?

The function of a supply duct is to help in the flow of air from the outside to the room.

A return duct helps in air circulation from within the room to the outside.

Why should you Buy Biyang Duct Boot?


Biyang duct boot

  • Biyang offers different types of duct boots.
  • Biyang offers different materials for the construction of duct boots.
  • Biyang offers duct boots at a relatively cheaper price
  • Our duct boots are ideal for different environmental conditions such as being rust resistance.
  • We can easily customize your duct boots depending on your requirements
  • We offer duct boots that are easy to attach to the ducts.

Do Duct Boot Require Insulation?

Yes. Insulation is a critical element when installing a duct boot on a ventilation system.

Insulation helps in preventing leakages at the point of connection of the duct boot on the ventilation system.

This helps in ensuring that the ventilation system works efficiently.


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