Defects in products made by US companies ignited and fueled the catastrophic 2017 Grenfell Tower fire in London that killed 72 people, according to a lawsuit filed in Philadelphia on Tuesday on behalf of injured victims and families of those killed.Attorneys for the plaintiffs said they represent the estates of 69 of the 72 people who perished in the residential high-rise fire, and 177 survivors who suffered life-altering injuries. The 420-page lawsuit demands a jury trial but did not specify the amount of compensation it was seeking. The plaintiffs’ attorneys said the case marks one of the highest number of individual wrongful death and personal injury claims ever brought in a single product liability lawsuit stemming from one incident. The suit says flammable plastic parts in a refrigerator from US appliance maker Whirlpool Corp ignited the blaze, and the flames were swiftly spread by highly combustible materials in the American-designed insulation and exterior cladding that encased the structure. Those materials “turned the Grenfell Tower into a cylinder of fire,” Jeffrey Goodman, an attorney for one of two law firms that brought the case, told a news conference in Philadelphia. In addition to Whirlpool, based in Benton Harbor, Michigan, the suit names as defendants cladding supplier Arconic Inc, headquartered in Pittsburgh, and insulation maker Celotex Corp, a US subsidiary of French multinational Saint-Gobain, based outside Philadelphia. “This case is filed in America to hold the American corporations responsible for the devastation and tragedy that they caused,” Goodman told a news conference.