These measure 60" x 25" and 55" x 27". These were air tanks and not propane. They do have some holes etc. They are heavy walled and heavy tanks.
Also have some propane tanks that are smaller off of tractors if you are looking for something smaller.
More pictures added. These tanks are around 8' long and 3' dia. No valves and they have been off for awhile but they still stink.
Make an offer If interested. Msg me on here for questions or to set up a time to come look.