Supco SZO583 Refrigerator Door Gasket Replaces Sub-Zero 7010583, 3212100 REFRIGERATOR DOOR GASKET - This premium quality part is a direct replacement for Sub-Zero 7010583 and 3212100. PREMIUM REPLACEMENT - Supco SZO583 refrigerator door gasket is designed to meet or exceed OEM specifications. White gasket measures 59 x 34 inches. HIGHEST-QUALITY PARTS - Supco parts are built to last and a popular choice among repair technicians and DIYers. All compression gaskets are made from refrigeration grade virgin vinyl.