Cost lever Sales-speak decoder
United inches
UI — width plus height · “U-I”
A window's width plus its height in inches. Price books are banded by UI, so crossing a band bumps the same window into the next price bracket.
What it means for you
Why a slightly larger window can cost noticeably more — it tipped into the next UI band. Handy when a salesperson blames “custom sizing.”
Where you'll see it
You'll almost never see it; it lives in the installer's price book. Now you know the lever behind the number.
Don't be fooled
“That's a custom size” often just means one more UI band, not a bespoke window.
Related terms
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