If it's 34+ pounds, it could be 1.25 KVA. If it were MVA it would be the size of your car.
I just checked. A 0.5 MVA transformer weighs about 5000 pounds.
A very small car. 1.25MVA is about 1.5m cubed depending upon manufacturer and fittings, just for the tank itself. Switchgear would require extra room.
They weigh a lot because there is a lot of silicon steel in the cores.