A box wrapping assembly and method incorporates a framework having a special top hold-down platen that functions with a cooperating fixture that is affixed to a rotatable turntable. Using this assembly and method, the operator can place four sidewall panels in a self-positioning fixture and panel-capturing platen prior to wrapping. Stretch film is connected to the fixture by a hook device and the stretch film is automatically pre-stretched to a rope of stretched film for particular application where the box contents are intended to be contained within the box under pressure.