top story, while the other elevators only ran to the 16th story. Although all the passenger elevators could travel at , one of these elevators could also be used to transport heavy equipment and could be slowed down to , thereby doubling its carrying capacity. The elevator cabs were originally copper cages with mirrors on each wall. The building contained two boilers, which were each capable of . Steam risers distributed heat from the boilers to 542 radiators. Water from the New York City water supply system was drawn into the basement and filtered at a rate of per minute. The filtered water was then pumped up to the 23rd floor and distributed to other stories. In case of a fire, there was a water tank in the basement and two tanks on the 23rd floor. Three sewage pumps, with a combined capacity of , were used to pump wastewater out of the building. In addition, there was a gas pipe extending from the cellar to the 16th floor. Outdoor air was drawn into an air-intake opening at street level and through air filters in the basement; the filtered air was then distributed to the offices. On the Seventh Avenue side of the building was a ventilation pipe, which faced the building's outer wall and was surrounded by the stairs, elevators, and restrooms on each floor. During the summer, a large electric fan pushed stale air upward through the ventilation pipe. The building also contained 2,400 electrical outlets and over 6,200 lamps. The offices were illuminated by 150 ornate chandeliers on the 2nd through 14th floors. There originally were of electrical wires and of electrical conduits in the building. Billboards One Times Square's first electronic billboards were installed in 1996. A Cup Noodles billboard with steam effects was added to the front of the tower, later accompanied by an animated Budweiser sign. In October, a 55-foot video screen sponsored by ITT Corporation was introduced to the top of the tower, which would feature video advertisements and community service announcements. In December 1996, a Panasonic display operated by NBC known as Astrovision was introduced as a replacement for Sony's Jumbotron at the base of the tower. Filings related to the building's 1997 sale revealed that the billboards on the tower had been generating a net revenue of $7 million yearly, representing a 300% profit. Sherwood Equities president Brian Turner estimated in