We have a finished basement that includes a family room, two bedrooms and a bathroom. All of the windows in our basement are emergency egress windows.
These windows crank open from the inside, and the screens on them are easy to pop on and off. Another thing I like about this is that they are easy to clean.
Whenever I need to clean the windows downstairs, I can easily remove the screens and clean both the inside and outside of the windows.
We have never had to use them in an emergency situation, but I know they would be easy to escape from if we ever needed to.
I can see why many building codes require this type of emergency window in a place like a basement. Our basement is not a walk-out, so in case of emergency, these windows would be the only way out.