Window Replacement is a given as a home ages. And with a great balance of energy efficiency, durability, and beauty, the Eagle 5400 series a great place to start in our House Window Replacement lineup. Welcome the light of a new day, and welcome the chance to express your individuality. And with our Energy Efficient Windows, you will enjoy a few extra bucks in your pocket after the electric bill is paid. This replacement window’s sturdy, durable construction increases structural strength while improving weather resistance.