Canning Racks Mirro Canning Racks, Presto Canning Racks, All American Canning Racks. Find the right Canning Rack from Cooking and Canning Co. Canning Racks are used to hold Canning Jars off the bottom of a Pressure Canner while you are Pressure Canning. Use "2" Canning Racks, if your Pressure Canner is tall enough to stack a second layer of Canning Jars. Place the second Canning Rack beween the layers of Canning Jars in your Pressure Canner while Pressure Canning. 11 1/2 in. dia. Wire Jar Rack $16.99 11 1/4 in. dia. Canning Rack $11.49 10 1/8 in. dia. Wire Jar Rack $9.49 9 1/2 in. dia. Canning Rack $9.49 8 in. dia. Canning Rack $8.95 6 3/4 in. dia. Canning Rack $7.49 Wire Canning Rack $15.50 All American Canning Rack 151 Regular price: $14.49 Sale price: $11.49 98513 Canning Rack Regular price: $14.95 Sale price: $11.49 6 3/4 in. dia. Canning Rack $7.49 Finally,a place to buy Canning Racks to fit a Mirro Pressure Canner, or any Pressure Canner. Just measure the inner diameter of your Pressure Canner. Then pick the Canning Rack that fits your Pressure Canner or maybe two Canning Racks.