Windows and doors are a significant investment. They offer increased daylight and a direct connection to the outside, thus increasing the sense of freedom and the overall quality of life. Also, windows and doors can reduce energy costs, add to your home's curb appeal, improve ventilation and reduce condensation. That's why it pays a little time to invest in learning about the most important door and window features. Armed with a bit of knowledge, you will find it easier to make the right product choices for your new or remodeled home.