That type of replacement windows is called single slider, because there is only one glass panel, which is opened by sliding it to the right or left and one panel that is fixed. Such windows are not only convenient and energy efficient, but also safe and attractive.
You may order these windows with a 2-7/8 deep frame from various series, for example Catalina and Del Mar. If you would like to complement your project with other types of windows, bay and bow for instance, you may mix Catalina, Del Mar and Coronado series. All of the three series have special design that make the sight line of the window straight. This means that whenever the window is opened or not, its lower and upper edges will align through the full height of it.
The Del Mar-E and Catalina-E were developed to give maximal possible panorama and thus less frame width. Some people want to have the greatest panorama. These windows were designed to be opened as wide as possible especially for emergency escape. As for types of sight lines – it is also a matter of choice, which is, due to Anlin is all yours.
If you are trying to make up your mind of what type of window would suit your house the most, then have a look on characteristics listed below and compare.