1) Sears is over priced & waste alot of time on an estimate.

I read a helpful article online at :
http://www.bobvila.com/ArticleLibrar...ntWindows.html

(as an example, I wasn't aware that you had to change the window frames
too; i.e you can't just install impact resistant glass in window
frames.. stuff like that) I also pasted a paragraph below.

I wouldn't recommend impact resistant window film.
( if you're going to do it, get impact resistant windows/glass)

I went to Miami dade County's web site & they had a search function
that lets you select an item (windows) & building materials- I chose
impact resistance, and it pulls up a list of building code compliant
companies that installed impact resistant glass.
Maybe your city has a similar online function ?



Dave Olmstead, spokesman for PGT Industries in Venice, Florida, agrees
that no matter how strong a window is the attachment to the building
structure is critical. Olmstead says a window that is 53-inches by
76-inches would have 28 square feet of exposure, and with a wind speed
of 146 mph from a category 4 hurricane would result in a load on the
window equivalent to 1,958 pounds of pressure. For the window to
perform correctly, the load has to be transferred to the building
itself, which is done by using suitable anchors to transfer the load
from the window or door frame to the rough opening without causing
failure.