North American rinks are 85 feet wide by 200 feet long. International rinks are 100 feet wide by 200 feet long. The 2010 Winter Olympics were the first Olympiad where the hockey games were played on the 85-foot wide rink format. Some former NHL rinks, such as the ones in Chicago Stadium and in Boston Garden, were shorter than 200 feet resulting in a tighter distance between the blue lines which made the style of play somewhat different than on regulation-length rinks.
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As per the WHL site, "The official size of the rink shall be two hundred feet (200') long and eighty-five feet (85') wide."
So, yes... These are the same dimensions as an NHL rink.