Norpro Canning Rack Jar Holder 12" 7 Quart Canner - 604 Norpro`s canning rack holds up to 7-quart or pint jars. It keeps jars from touching each other or the canner as hot water circulates freely around the jars. Measures at 12` in diameter. The unique handle design lets you raise and support the jars on the edge of the canner for easier removal.