Doors

Claim 1

A SLAB DOOR COMPRISING: FRAME MEMBERS INTERCONNECTED IN FRAME RELATION, SAID FRAME MEMBERS INCLUDING RAILS AND STILES FORMING A SUB-FRAME CONSTITUTING THE ENDS AND EDGES OF THE DOOR AND ENCLOSING A HOLLOW SPACE, AND FILLING MEANS DISPOSED WITHIN SAID HOLLOW SPACE, AND PANELS SANDWICHING AND INTERFASTENING THE RESPECTIVE FRAME MEMBERS; SAID FRAME MEMBER BEING OF EQUAL DEPTH AND BEING INTERCONNECTED BY TONGUES FORMED ON SOME OF THEM FRICTIONALLY ENGAGED IN GROOVES FORMED ON OTHERS THEREOF; SAID TONGUES BEING INTEGRAL WITH THE FRAME MEMBERS ON WHICH THEY ARE FORMED AND BEING SUBSTANTIALLY CONTINUOUS ACROSS THE FULL DEPTH THEREOF; SAID GROOVES BEING CONTINUOUS AND EXTENDING SUBSTANTIALLY ACROSS THE FULL DEPTH OF THE FRAME MEMBERS ON WHICH THEY ARE FORMED; SAID TONGUES BEING BODILY SLIDABLE ALONG SAID GROOVES, AT THE TIME OF MANUFACTURE OF THE DOOR, TO POSITIONS WHEREIN THEY ARE RETAINED BY THE FRACTIONAL ENGAGEMENT BETWEEN SAID TONGUES AND SAID GROOVES, TO PROCURE ALIGNMENT AND FRACTIONAL RETENTION OF SAID FRAME MEMBERS IN UNSTRESSED, PRECISELY FLUSH RELATION WITH EACH OTHER AND IN TOTAL CONTACT WITH SAID PANELS; SAID DOOR ENDS AND EDGES BEING RESPECTIVELY FLAT AT LEAST ON THE EXTERIOR PERIMETER OF SAID DOOR.