Walthers Cornerstone #933-3129 HO Propane Tanks Kitset Walthers Cornerstone Propane Tanks are great details for a grain elevator or other industries that need fuel for their processes. These large capacity tanks are used to store propane to fuel grain drying equipment or anhydrous ammonia, used as a fertilizer. Similar tanks can also be found at propane dealerships. The kit includes parts for two propane tanks with supports and decals for several businesses. Each tank measures: 9 x 1-1/2" 22.8 x 3.8cm