I've probably installed more than a thousand doors and windows, and this may make me an expert in the topic of the window framing. The most difficult thing about window framing in home construction is the size of the window opening.
This information is usually supplied by the manufacturer of the window, but if you get the wrong size, it could lead to some very difficult window framing repairs. In this reference, you can find the best casement makers in Phoenix Arizona at affordable prices.
Although this doesn't seem as common as it used to be, I was once accompanied by a man who gave me incorrect measurements for framing rough openings. This was extremely frustrating for me because I was the one who installed all the doors and windows.
One day I reached a point where I was getting very frustrated with the man I was working alongside and told him that I wouldn't install another window into an opening that was too small.
He began to yell at me as he does often. I didn't give up and said that I needed to find out the name of the manufacturer of windows so that I could contact them directly to obtain the correct rough framing measurements.
His measurements were more than an inch off the width and two inches higher than mine. This is usually not a problem if you are remodeling a bathroom with just one window. If you plan to build a three-story home that has over 40 windows, it could be a lot more work.