Practical size for windows and roller shutters

Good evening,

We currently have two quite large terrace doors planned in the living area.

1.: Height: 2.55m Width: 3.20
2.: Height: 2.55m Width: 2.40

The plan is to have the whole thing with an [Aufsatzrollladen] height of 25cm. Flush ceiling lintels are planned in the concrete ceiling. The floor construction is 20cm. The rough construction height is 3 meters (from top of rough floor to bottom of ceiling).

The height is composed as follows:

- 20cm compensating element for screed due to floor construction up to the top edge of finished floor
- 2.55m window/door
- 25cm [Aufsatzrollladen]

= 3m

My question to the experts: Should I reduce the width of the openings so that we do not have problems with the [Rollläden]? For example, instead of 3.20, make it 3 meters?

The rest of the windows in the building have been planned by the architect with a width/rough opening of 1.60m (double windows).

Thanks & regards

Do you mean lift-and-slide doors?

Yes. The width over 3.20m will be a lift-and-slide door. In the opening with a width of 2.60 there will be a fixed element + a normal balcony/terrace door to open, single-leaf - width maybe 90.

Should I reduce the width of the openings so that we don't have any problems with the roller shutters? For example, instead of 3.20, 3 meters?

Why - do you think the extra 20 cm would be a problem for the wind load?

I only have concerns that it will be difficult to get a continuous roller shutter box that covers a span of 320. And a corresponding roller shutter curtain. I also don't want it to sag or be a super special custom-made item.

For the roller shutters, I would go with aluminum slats. We have 2.20 plastic and already had considerable bending during a storm.