Window size

When you are looking at a window. How do you determine its size. Small, Med. or Large. Only reason i ask, is i am creating a spreadsheet to track time.

This is coming from a very amateur position, but I have if it is the size of a window I can clean without much alteration in my foot work then it’s a medium window. First off, I say “much” alteration because I may have to bend or crouch down if it’s, say, a door, or if it’s very wide and short I may have to move to cover it. I also say “the size of a window” because it may be above head to need a pole or over something, needing a ladder or some other piece of equipment.

Anything smaller than this would be small, anything larger would be a large window.