Hi Peggy,
It can vary widely based on what kind of window you have now (aluminum, wood, vinyl, etcl) as well as if you have brickmould casing on the exterior etc. It can be up to 5" different. Just ... read more
Phillip and Clifton have it right on. That's our reference as well. Digging one level deeper, the biggest bang for your buck generally comes from direct replacement projects. Meaning, if you need t ... read more