Window Jamb Size

it depends on what type of windows you are quoting. if they are clad then they need to be the full width of the wall like a door would be. so generally they would either be 4 9/16" or 6 9/16". if you are quoting vinyl then they will be whatever the standard size is for for that manufacturer. most brands are going to be somewhere around 3". some a little over, some a little less. once a vinyl window is installed you can either decide if you want to run the sheetrock back to the frame of the window to finish it out, or if you want to return them with wood. it's most commonly done with sheetrock but either way is fine. regardless of if you have a 2x4 wall or a 2x6 wall the vinyl window frame size will be the same.