Now that’s a much better proposition
If it were me I’d look to increase the size of the chilled area by putting in a new bulkhead & removing the old one (put the new one in first as it is a structural element of the box!), then use the first area as you walk in for prep work.
(Edit: just seen your suggestion of getting rid of the internal wall.., DON’T - it’s what is stopping the box twisting. If you want to take it out then find another way to provide the bracing it provides. If you look at the construction you’ll see that the whole thing is made up of sheets that are bonded to each other & held in place by relatively flimsy fibreglass angle sections.)
While on the subject of structural integrity, these boxes are not the most rigid so for hanging carcasses I’d suggest a free standing kee-klamp type frame.
These boxes are not the most thermally efficient either so you may want to think about lining the inside with another layer of insulated board. Plus replace the door seals as these are usually worn out or missing. Another thing that will help it, especially in the summer, is if you can put it inside a barn or at least build a cover over the top to keep it out of direct sunlight. These units are built to a price to meet a minimum specification & that is what they do, just! - in the summer the chillers are running pretty much constantly to keep them at 5C or less.
I’d also put in a new anti slip floor covering - that orange floor in the centre has resin impregnated with glass (or similar) & is very abrasive. The side strips will not be anti slip either! And, the floor will be a cess pool of bacteria that you do NOT want in your chiller!
Hope this helps
