It's way past fridge, and into the serious (deep) freezer range. Our home freezer is set to -18 °C which would be 255 Kelvin). Around 45 Kelvin away from room temperature, I'd say without looking up the formal definition.
If we count my garage as a room, then it's room temperature every winter.
But at normal atmospheric pressures.
An improvement to the alternative which was in the realm of what, a few kelvins or something?
afaik -150f or at room temperature at millions of earth pressure