Need help. Please be patient with me Im not a tech. We have an old freezer that 60' x 65' x 12' tall on a non insulated concrete floor. We need unit to be 0 degrees F. Everything going in is frozen
Panels are close to 50 years old.
Question is can I install a new 4" panel inside unit and leave the old one in place? Will this help?
Also How do I figure out what size units I would need if all my panels were new.
Thanks