- box shape: rectangular (optional rounded inspection flap from the front)
- PVC box (optional external aluminum front plate)
- curtain type: aluminum filled with polyurethane foam or PVC
- inspection flap from the forehead and from the bottom
- aluminum and PVC guides
- maximum construction depth of the window frame for a inspection flap at the bottom: 102 mm
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A solution for the most demanding customers, especially due to the number of possible personalized amenities. The definite advantages of the system, among others, are increased thermal insulation due to additional isolation of the box, as well as the possibility to insulate the frame by using thin guides made of extruded aluminum for mini and maxi profiles. And also, at the customer’s request, the system can be equipped with a built-in anti-insect net.