This is the horizontally operating application of single opening windows. The hinges are connected to the horizontal part of lower sash. The handle is on the upper horizontal part The handle is in closed [normal] position while it is parallel to the ground, namely, horizontal. The handle Is opened by being turned in downward position, by turning the sash on the axis of hinges on lower horizontal part. A transom switch is available on the side of the sash so that the profiles or hinges are not damages due to the fully turned [180°] sash hitting the wall or being strained. The switch will allow the sash to be opened to a certain extent Switches that accommodate different opening sizes can be used in line with the magnitude of the joinery or customer's preference, the locks that are closed with a strike can also be used instead of handles. To close the window, it is enough to hold it by the handle and push the sash towards the frame, then turn the handle once the sash has been secured in the frame. Sometimes, double switches can be used in especially large size transom windows. Assisting with the other hand while closing transom joineries that are large and in different forms [triangular, round, elliptical, trapezoid, etc.] will be beneficial in terms of the functionality and lifetime of the mechanism. For stricken lock applications, the closure of the window is performed by pulling down the latch of the lock and pushing the sash [then, immediately releasing the latch]. It is enough that you pull down the latch of the lock and pull the sash towards yourself while opening the sash. When it is intended to set the sash released for cleaning purposes, the transom switch pin is removed from its slot while the sash is semi-open, then the sash is slowly released downwards. The window is cleaned after necessary precautions to ensure that the sash, hinge and mechanism are not damaged have been taken. After cleaning, make sure that the switch is secured in place and the system is operating smoothly.

If the transom windows are outside the range of reach, namely, if they are high above [garage windows, factory windows, etc.], then a different accessory is used. There is no handle on the sash in this application which is called high transom. The transom sash and espagnolette are activated by means of a different mechanism. This mechanism, which extends downwards from the side of the high transom window as being built in the wall ensures that the high transom window is opened and closed by means of a special mechanism handle fixed on the wall that will ensure convenient control from the ground at the normal distance of an arm. The high transom mechanisms enable simultaneous control of multiple transom windows. If necessary, the same mechanism is also used in reverse transom systems. Multiple high transom applications can also be implemented on condition that they are one on top of another or side by side.