You may think that door jam construction would be a very tedius job, but actually it is a relatively easy project. You can either purchase the precut boards or you can purchase trim boards and cut them to size. You may need to purchase weather stripping if you purchase the trim boards and cut them yourself. The weather stripping usually is provided with the precut boards. You can visit
. www.diychatroom.com/f19/building-door-jam-9520/ for more information.