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Mon-Thu: 07:00 - 17:00; Fri: 07:00 - 16:00; Sat and Sun: CLOSED 8th street, C-24, down river, Panama Province, Panama City, Republic of Panama +507 60765295 2039025 / 2039019 contacto@grupokefren.com

45 mm folding

The 45 mm folding series is an aluminum exterior carpentry system for casement doors and windows. It is a set of high-end folding profiles that has a perimeter frame and 45 ° cutting blades. Adaptable to any space, it offers great benefits thanks to the size of the leaves and frames. This system is one of the most complete as it has a European channel that allows you to use all kinds of hardware for doors and windows.


It has a variety of frames and sheets that allow covering a multitude of designs and assemblies. Mainly doors, windows and fixed panels.

It has good thermal behavior and tightness (against water and temperature changes). This feature is present in all door and window models.

On an aesthetic level, it comes in natural anodized, white lacquered, black anodized, bronze anodized, dark gray textured lacquered and wood lacquered finishes.

It has squares for frames and leaves to guarantee quality finish, good alignment and resistance.

For glazing, the maximum thickness of the glass or panels is 26 mm and the minimum is 1 mm according to the table. Allows monolithic, double and triple glass assemblies.

It is compatible with the 60 mm perimeter series, the 70 mm perimeter series and the 70 mm straight cut series.

Available finishes


The 45mm hinged series is compatible with 3 types of opening, applicable to doors and windows. The choice of type will depend mainly on the design and characteristics of the project in progress. The types are:

1- Practicable blades

The practicable opening is the traditional type of opening. Windows and for this case doors of this type use a fixed axis or pivot for the opening and closing movement. They allow a total opening and generally use hinges compatible with the profiles used to hold the sash.

2- Tilt-and-turn blades

The tilt-and-turn opening type generally offers two options for pivoting the window sash. It allows one pivot horizontally and one vertically. As with the practicable opening, the opening on the vertical axis can be complete, while on the horizontal axis the opening is partial and does not exceed 180 °.

3- Exterior opening leaves

This type of opening is similar to that of the practicable leaves, with the particularity that, as its name indicates, the opening of the leaf points to the outside of the area where the window is installed.


Send us a message in our contact section and we will gladly attend to your orders or any questions you may have. Click on the button below to quote the system you need and receive personalized advice to carry out your project.

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