Apple opened the doors of its Grand Central Station store Friday at 10 a.m. to a huge waiting crowd. Thousands of eager customers lined up to flood up the stairs from the station’s main concourse — Engadget reported that it was “packed to the brim.” For their part, Apple employees had instructions to give a free T-shirt to the first 4,000 customers. Fortune reported that, by 12:30 a.m., 4,000 customers had passed through the store.

The Wall Street Journal reported that the first customer in line was a 19-year-old man from Albany, N.Y, who arrived at 9:44 a.m. Thursday. CBS identified him as Jacob Davis, and said that he came down with his father, Robert, who took two days off of work so that the duo could be the first ones through the door. Gary Allen, who was profiled by The Post’s Michael Rosenwald on Apple’s 10th retail anniversary, was the second in line, the report said.

The Journal report said that a crowd had waited in front of the Apple store overnight, though they were asked to leave between 2 and 5 a.m.

It is the fifth store Apple has opened in Manhattan alone, and adds to the company’s roster of about 300 retail locations worldwide.

The reportedly 23,000-square-foot space occupies the site formerly held by the restaurant Metrazur, reportedly has two Genius bars and 42 display tables to show off all of its products.

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