How do I count my windows?

Double-Hung Windows
Counts as 1 window

Crank-Out or Casement Windows
Counts as 1 window; for a row of casement windows, each panel is considered a window

Sliding Window and Sliding Doors
Counts as 2 windows; each panel is a window

Full Glass Door
Counts as 1 window

Arch Window or Specialty Shapes
Counts as 1 window

Transom Windows
Counts as 1 window

Bay or Picture Windows
Counts as 3 windows; each panel is a window