My wife and I just bought a new house which has a detached garage that will be used to store my toys . The plan is to to insulate then put up osb board for the walls. There are two windows, about 44 x 23 which are in good shape but really innefficient looking as the lower half is thin glass that can be opened like a vent with 3-4 strips of glass running horizontally that open/close. I'd like windows that can slide open with a screen on one side but much more air tight when closed. I'm open to the idea of doing it myself (never replaced a window in a building) but thought I'd ask what companies or people might come recommended. There is a budget to follow for sure, windows can be pretty basic. Figure I should do these before proceeding to insulate and put walls up .