ᐅ Burglary Protection for Windows and Floor-to-Ceiling Windows on the North Side

Hello everyone,
I need your advice on deciding about
“burglar protection for windows (1.01m x 1.37m (3 ft 4 in x 4 ft 6 in)) + floor-to-ceiling window (2.01m x 2.37m (6 ft 7 in x 7 ft 9 in)) on the north side.”
The windows are in the basement room on the north side. The basement is a waterproofed, unheated utility basement with a ceiling height of 2.5m (8 ft 2 in).

I am considering:
- Aluminum electric roller shutters: not 100% protection. For all other windows on the ground floor and upper floor, I already have roller shutters.
- Window grilles: better protection but worse thermal insulation. For the floor-to-ceiling window, I have also seen lockable grilles (like a gate).

I believe the price difference is not significant.

What would you recommend?
Thank you very much, and I wish you a nice weekend.

Is RC3 mandatory?

Standard windows and roller shutters. Personally, I think anything more is unnecessary. Break-ins usually happen through open windows or similar. I’d rather spend my money on nice or practical things.

If someone wants to get in there, they will get in, no matter which security level you choose; it probably just takes a few seconds longer.

The longer it takes to get inside, the less likely a break-in becomes. You need to be a tougher target than your neighbors.
Motion detectors with lighting already help a lot. A camera with lighting (e.g., Arlo) will notify you immediately if something happens. Even better is a dog (regardless of size—the chance of detection is too high for intruders).
Windows rated RC3 would also be a good idea.

Simply brick it up. It’s safer.

But seriously, bars are like a prison. I wouldn’t restrict myself that much for the low probability of an intruder trying to get in. Go for RC2N, meaning better leverage resistance, and that’s fine.