https://sws.nrel.gov/spec/302019
Remove existing window stops, sashes, parting strips, pulleys, and weights. Insulate and seal existing window weight pockets if they will remain after new ...

https://www.pella.com/ideas/windows/standard-window-sizes/
Single- and Double-Hung Window Sizes - 2 feet wide by 3 feet tall (2030) - 2 feet wide by 4 feet 4 inches tall (2044) - 2 feet 8 inches wide by 4 ...

https://modernize.com/windows/standard-sizes
The most common window size is 36 inches wide x 60 inches high. Double-hung and single-hung windows are the most popular windows you will find ...