then ready for installation in wall panel 12 door 20 is positioned within opening 18 in the wall panel 12 and the clearances are set such as by blocking the bottom and sides of the door 20 with suitable spacers the second arm portions of the angle members 44 and 50 extend outwardly from the door in a common plane and they will be disposed against the second major surface 16 of the wall panel 12 the second arm portions of angle members 44 and 50 are then secured to the wall panel 12 by fastening means 48 and 54 respectively such as by wood screws stops 38 and 40 may then be positioned and secured to the second major surface 16 of wall panel 12 via fasteners 39 and 44 respectively such as wood screws lock 42 may then be assembled within the opening 82 in the door 20 lock 42 includes a rotatable member adjacent to the second major surface 24 of door 20 actuatable from the side of its first major surface 32 the rotatable member includes a tab 43 which cooperates with the second major surface 16 of the wall panel 12 to provide the locking function the resulting assembly of the wall panel and door is then ready for installation such as in an elevator car in summary there has been disclosed a new and improved door.