Original sentence: Its original 90 Mg (100 ton) vault door is the largest in the world
Edited sentence: It incorporates the largest hinge ever built.Its original 90 Mg (100 ton) bank vault door is the largest in the world.The door casting itself was 18,160 kg (20 tons).The vault's use was discontinued in 1997, though it is preserved intact for posterity.This door has an overall height of  and weighs over 42 metric tons (47 short tons) fully assembled