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).
The foundation and frame of your house should last a lifetime if they were properly built. And while the walls should also last the lifetime of the house, aluminum windows are only expected to hang around for 15 to 20 years. Wooden windows should last as long as 30 years.