The rectangular ceiling vents are the ceiling diffusers that are used to heat, return or exhaust the air of the ventilated environment. These valves are suitable for ceilings up to 4 meters high and can be produced in one to four-way types to create the flow pattern desired by the designers. For example, the two-way round coil ceiling valve is suitable for use in the corners of the room, where the valve does not need ventilation from two sides.

It can be seen from the name of this valve that it differs from the wide coil ceiling valves in the profile used in the valve frame. Wide coil valves have dimensional limitations because the opening of the roof must be 7 cm larger than the dimensions behind the valve and also the channel connected to the back of the valve must end 2 centimeters higher than the bottom level of the roof. Therefore, in order to eliminate the above limitations, the valve can be Open coil roofs are used. These valves are made in two types: fixed blade and detachable (moving) blade. The fixed vane model of open coil ceiling valves is offered for installation without dampers or installation with parallel and opposite square dampers, because access to these dampers is possible from the frame groove. In this case, there is no need to create an additional hole to adjust the damper. In the detachable vane model, it is possible to install it with a butterfly damper, as well as install it from inside the frame without the need for screw holes on the face of the frame.

It is worth mentioning that the air distribution pattern of this valve is horizontal, but due to the presence of the groove around the valve, the air flow is some distance from the ceiling, which causes the loss of the Coanda effect between the flow and the side wall. Open coiled rectangular roof vents are produced in different types of electrostatic powder colors based on the request of our dear customers.
Installation of a rectangular open coil ceiling valve

As it is clear from the name of the product, the material of the frame and vane of this valve is made of high-quality aluminum, as well as the ability to install a variety of valve back dampers (parallel valve back damper and mutual valve back damper) as well as valve back conversion if required by the customer. There is a hatch behind. It should be noted that if dampers are installed behind the valve, it will be possible to access the damper from the frame or the distance between the blades.

In order to install the hole valve, screws are considered on the frame and the valve is screwed on the frame in the desired place. This type of ceiling valve is produced as a valve inside the Armstrong tile (maximum size 20 x 20 inches) or a full Armstrong ceiling valve with a square open aluminum coil in different types of electrostatic powder colors.