High-rise horror as Melbourne pair plummet

Two window cleaners have escaped injury after their platform malfunctioned and plummeted several floors in a hair-raising ride down a high-rise building in Melbourne.

The window-cleaning gantry free-fell a number of floors before coming to a dangling halt above busy Bourke Street in Melbourne's CBD on Friday afternoon, the Metropolitan Fire Brigade says.

The platform landed lop-sided after smashing into a windows on the Commonwealth Bank Building.

Firefighters performed a delicate high-angle rescue to reach the men and both were brought to the ground about 4pm, some two hours after the fall.

An ambulance spokeswoman said the pair had no obvious injuries and were taken to the Royal Melbourne Hospital for observation.