Contralto Marian Anderson sings her famous 1939 concert on the steps of the Lincoln Memorial, Fred Friendly recalls the production of the 1954 See It Now TV broadcast that helped to derail Sen. Joseph McCarthy, and former hostage Jackie Plug recalls her torture as a passenger on the hijacked Egyptair Flight 648.
Jack Size? I bought an MP3 player on Ebay a while ago and it works good, but it doesn't have any brand name on it so I can't say who makes it, all I know is that it's from China. My dilema is that I want to buy some speakers for it and the jack is smaller than a normal 3.5mm jack, so I don't know where to look for speakers.
Once you know the depth of the header, it's width is cut to fit from king stud to king stud, with the jack studs fitting under it to help disperse the loads. A typical header width with single jack studs is cut 3 larger than the rough opening. door has a rough opening width of 38 so your header is cut at 41. Also be aware double or triple jack studs may be required based on the opening width and the load the header carries. Be sure to check code requirements prior to framing.