你先看看你现在的窗户是什么结构的. 是木框还是铝框. 框子有没有烂了. 下窗沿是否是13度倾斜的.有没有烂. 窗框烂了你就得换整个窗户.
Lowes那个是STORM WINDOW,是装在现有的窗户外防风雨的. 你应该换的是Double Hung Window. 如窗框没烂可以只换那两片窗, 加上旁边一对轨道. Vinyl costs $200-$300. Wood cost $300. Wood with vinyl cladding and wood with Aluminum cladding $300-$600 per window.
Installation is easy if you know how.