Atrial flutter is an abnormality of the heart rhythm, resulting in a rapid and sometimes irregular heartbeat. Such abnormalities, whether in the rate or regularity of the heartbeat, are known as arrhythmias. The main danger of atrial flutter is that the heart does not pump blood well when it is beating too fast. When blood is not pumped well, vital organs, such as the heart and brain, may not get enough oxygen from the blood.
The range varies with the window casing. Aluminum windows are relatively common and have a life expectancy of about 15 to 20 years. They can cost $348 per window (figure 50% to 100% more for new construction windows). Other popular window options include vinyl (lasts between 20 to 40 years) and wood (lasts about 30 years).
A replacement window can last a single day or they can last for many years to come. The main factor that determines how long replacement windows last is their overall quality. Windows that are made cheap can fail in just a few years. There are, however, vinyl windows out there today that have been installed in their respective homes for the past 40 years and they are holding strong.