To install the air supply unit you will need:

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Example of installation of a ventilator with perforation
It is advisable to install the valve under the perforation in the upper part of the window. The complexity of the work lies in the need to mill the frame - here you cannot do without special equipment and skills in working with power tools.

Carrying out preparatory work
When planning the installation of a valve, it is necessary to take into account some points:

it is better to install the ventilation device on the removed sash;
installation is carried out during the warm season;
When cutting a hole, you need to work carefully so as uruguay mobile database to damage the seal on the sash.
The sash is removed from the hinges and installed in an inclined or vertical position.

Part of the hardware trim (scissors and corner gear) is removed from the frame, and the counter strips are removed - they may interfere with milling

List of necessary tools

electric drill and drills (diameter – 5 mm and 10 mm);
fine-grained file;
jigsaw;
template for marking holes;
silicone sealant.
You can prepare a groove without a template, but it is easier to work with one. You can make a template yourself from plywood or hardboard.