Guide
What drives a window replacement bid
Quick answer
Count, type, access, and trim — not just the glass SKU.
Openings are not identical
A first-floor double-hung and a third-story picture window do not share a unit price. Measure width, height, and how the crew reaches them.
Insert vs full-frame
Insert replacements keep the existing frame when it is sound. Full-frame work appears when the old frame is rotten or out of square.