Tempered
Tempered glass is almost 5x stronger than normal glass. That’s why a lot of people like to have tempered glass windows in areas where people frequently hang out at home. Also, some building codes require you to have tempered glass.
*Product availability varies upon region.
Window opening control device
The same way a child safety lock can control a door’s ability to open, window opening control devices can prevent accidental falls and other hazards by limiting how far a window can be opened. Some building codes require these, too.
*Product availability varies upon region.