How cold can you ferment a lager?

[Joesf35]

I've been searching the boards on my phone app, which isn't as good for searches as the real site, looking for the low end of acceptable lager fermentation temperatures. I found high end discussions but I need the other extreme.
I have a small redbull fridge that maintains 46F-48F on the highest setting as the compressor cycles, no warmer. Will this environment work for fermenting a lager? If not are there yeast that can handle it?
(I have a big cooler I was going to use and swap ice packs, but the lid won't shut with the bucket in there).

Thanks

 

[Joesf35]

It is actually more like 45.5F-47.5F

 

[FromZwolle]

i've done it with saflager 34/70 at that range. came out a bit sulfury, but lagering took care of that. it's not ideal, but it'll work.

 

[SwampassJ]

Started wyeast American Lager at 42 and had active fermentation before it was able to self raise in the freezer to 45 and then held at 48 for 2 weeks.

 

[Joesf35]

Sounds like it should be fine with the right yeast and some lagering then.
I didn't think about the actual fermentation temperature being higher than the fridge. When you say self raise you mean the fridge was at 42 and them the fermentation kept the wort/beer at 45?

 

[SwampassJ]

Sounds like it should be fine with the right yeast and some lagering then.
I didn't think about the actual fermentation temperature being higher than the fridge. When you say self raise you mean the fridge was at 42 and them the fermentation kept the wort/beer at 45?

No I chilled it with a pump running ice water through the chiller to 42 degrees, aerated and pitched a huge starter then stuck it in the freezer set for 48. By the next morning it had gone up to 45 and was already showing an active krausen.