ᐅ Practical size for windows and roller shutters (or blinds)

Good evening,

We are currently planning two fairly large patio doors in our living area.

1.: Height: 2.55 m (8 ft 4 in) Width: 3.20 m (10 ft 6 in)
2.: Height: 2.55 m (8 ft 4 in) Width: 2.40 m (7 ft 10 in)

The plan includes a built-in roller shutter box with a height of 25 cm (10 inches). Flush ceiling lintels are planned in the concrete ceiling. The floor construction measures 20 cm (8 inches). The rough construction height is 3 meters (9 ft 10 in) (from the top of the raw floor to the underside of the ceiling).

The height is composed as follows:

- 20 cm (8 inches) leveling element for screed due to floor construction up to the finished floor surface
- 2.55 m (8 ft 4 in) window/door height
- 25 cm (10 inches) built-in roller shutter box

= 3 m (9 ft 10 in)

My question to the experts: Should I reduce the width of the openings to avoid problems with the roller shutters? For example, instead of 3.20 m (10 ft 6 in), make it 3 meters (9 ft 10 in)?

The other windows in the building are planned by the architect with a width/rough opening of 1.60 m (5 ft 3 in) (double windows).

Thanks and regards