Available choices: *Locate the side faces of the window frame, and use the bsps block. Place a ruler or measuring tape on the side facing the outside of the window.; *This leaves room to attach a " header expander " to the top of the new window. Others, though, dislike using header expanders because they decrease effective window size, and complicate the trim process.; *If the general principle is the same, then your new window frame will need to be about six inches (15. 2 cm) taller than the old one.; *On this example, the height measurement is 21 inches (32 inches), and is opposite the width measurement from the top of the window frame. The people who bought and install replacement windows actually built new windows with this height measurement, meaning they removed the side panels in the windows, and replaced them.;Choose from options above and answer: What most naturally follows?

How to install replacement windows
Take the width measurement from inside-to-inside of the window frame.
Take the height measurement from the bottom of the window frame to the top of the window frame.
Some people take the height measurement from the top of the sill.
Answer:
This leaves room to attach a " header expander " to the top of the new window. Others, though, dislike using header expanders because they decrease effective window size, and complicate the trim process.