Rectangular duct: types, manufacturers, sizes and reviews

2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16

A rectangular duct is one of the main parts of any ventilation system. It is through these parts that air flows. It is important to note here that the duct consists of not only straight sections. It also includes, for example, fittings that affect the direction of air movement, as well as the connection and separation of ventilation.

General description of the system

Experts recommend approaching the choice of air ducts very carefully and thoroughly. The choice should be based on the individual parameters of the existing system, as well as on the conditions in which it is planned to operate the network. In order to choose the right type as accurately as possible, you need to be well versed in their diversity.

Firstly, they differ in their appearance, they can be rectangular or round air ducts.

Secondly, they are divided into three groups, depending on what material they were made of. The raw material can be galvanized steel, stainless steel or aluminum.

Third, everyoneair ducts can be divided into two categories, depending on their performance. They can be straight or spiral.

The last classification for rectangular ducts and others is the way they are connected. Can be used flanged, rack or with bar and angle.

Description of rectangular systems

Industrial facilities and residential buildings have become the main place to use rectangular networks. This type of ventilation has two rather important advantages. They are very easy to install, and they will have a good level of tightness. However, you have to pay for everything, and therefore you will have to pay about 20-30% more for the convenience of rectangular air ducts than for round ones. Another disadvantage will be that it will take more time to connect the rectangular ventilation, since it will be necessary to assemble and fasten the flanges.

Types of details for the network

The main part of a rectangular duct, of course, is a straight section. The main parameters that you can choose are length, width and height. They can have the following dimensions: from 100 x 100 mm to 2000 x 2000 mm; length up to 2500 mm, but most often a standard length of 1250 mm is chosen; thickness from 0.55mm to 1mm.

Another necessary element, which is very difficult to do without, is a 45 and 90 degree ventilation outlet. The main purpose of this part is in rectangular air ductssection is a change in the direction of air flow in the network. According to their dimensions, they can be from 100 x 100 mm to 1200 x 1200 mm.

Quite often used is such a thing as a vent tee. This element is used if there is a need for ventilation branching. The advantage of the design is that it is multifunctional, that is, there is no need for additional installation of an adapter for a rectangular section. If there is a need to order a tee of a non-standard size for a rectangular duct, then you need to specify such parameters as H - height, L - length, R - radius.

Production

Many firms, including "Lissant", "Venti", "Ice-Comfort", "Convent", "Eurosphere" and others, are engaged in the manufacture of rectangular air ducts. A feature of the parts is that their assembly is quite fast, the parts themselves have a fairly good price. This saves a certain amount of material, and proper assembly will ensure a strong, reliable and well-sealed ventilation system.

For the production of all elements, the latest technologies are used to avoid damage to the zinc coating at the seam joints. In order to facilitate the assembly process, give more rigidity and attach additional rectangular elements to the structure, it is also possible to purchase a connecting rail with corner elements. The main purpose of thisdetails are to increase rigidity and prevent damage that may occur during transportation.

Advantages of rectangular elements

If we compare the installation process of rectangular systems with round ones, then the former will lose. The first group will win only on such a parameter as aesthetics. It is also worth adding that a rectangular network often takes up less space than a round one.

The rectangular galvanized air duct has certain advantages that allow it to remain in the top selling lines:

• The cost of such systems is lower than other metal ventilation.
• Galvanized coating greatly increases heat resistance as well as fire resistance.
• The durability and quality of the system assembled from rectangular parts became important parameters.
• Maintenance and production of such items is quite simple.
• Rectangular galvanized steel air ducts resist corrosion well, even when outdoors. In addition, the owner does not even need additional painting or primer.
• Light weight design makes it easy to transport.
• It is possible to adapt the entire design to individual customer requests.
• Easy installation process.

Flaws and manufacturing process

These systems also have several disadvantages. ToFor example, welded galvanized structures of a rectangular type, however, like all others, are quite easily deformed under mechanical stress. The second disadvantage is that under the influence of air a thin layer of galvanized steel will make a characteristic sound. In addition, it will increase significantly if the ventilation is outdoors.

The manufacturing process is quite simple, but high-precision and high-tech equipment is required, and therefore all manufacturers need to have such machines. As for the reviews on rectangular ventilation, they are mostly positive. Despite the fact that the cost is slightly higher than round, buyers still prefer rectangular products. This is largely due to the fact that installation is much more convenient and they take up less space. In addition, they are much easier to arrange indoors than round models.