A nozzle assembly housing includes a first wall, a second wall and an access opening in those walls. A locking tab receiver is provided on the first wall adjacent the access opening. A notch is provided on the second wall adjacent the access opening. Finally, a separate, removable panel closes the access opening. That panel includes a locking tab on a first edge that engages the locking tab receiver and a hinge lug on a second edge that is pivotally received in the notch.
