Abstract: A form for establishing an opening in a wall poured between a first wall form and a second wall form in a wall. In one embodiment the form comprises a substantially rigid body having an outwardly extending portion at each end for forming a recess adjacent the opening and having a supporting member for suspending the form from the wall forms. In an alternate form of the present invention, the wall form is defined by a collapsible wall form that folds inwardly from the poured wall's opening to allow for the easy removal of the form from the wall. In another embodiment of the present invention the form has an adjustable member for changing the depth that the form extends from the top of the wall forms.