is mounted along the left section 17 of the frame 11 and the wall panel 23 is located along the right section 18 of the wall structure however a reverse orientation would also be within the scope of the invention similarly the two panels 21 23 are shown to be of substantially the same size in all likehood the wall panel 23 would exceed the size of the door panel 21 each of the panels 21 23 has an outside edge 25 adjacent the frame 11 and an inside edge 27 the two inside edges 27 directly face or oppose one another the door panel 21 is connected to the left section 17 of the frame 11 by means of standard hinges 29 the door panel 21 also includes a lock 31 which has a retractable tongue 33 which can be retracted by any suitable means not shown to open just the door panel 21 in the usual manner in which a door is utilized it should be noted that there is no center partition in the frame 11 to receive the tongue 33 of the door panel 21 but rather such tongue 33 fits directly into an opening 34 in the wall panel 23 the wall panel 23 is mounted specially in the frame 11 pins 35 36 which are vertically oriented extend from the wall panel 23 into openings 37 which are vertically oriented in the top and bottom section.