Whoever told you that you can put a enclosure in 50 degrees let alone a Walk In Freezer is nuts. All I use are Pro Products, Herpstats and AP enclosures and thats about as false of a statement anyone could make while your shopping and looking for good info.
Any room under 60 is a problem. Any room under 68 you need a good wattage. I run 120 watts for AP T12’s. Those are 4’Lx2’Dx2’H. I run the Herpstat on 80% power for these panels.
I did have 80 watt panels and although they kept the Hot spot ok, in a room that falls below 68 at night the 80 wattage will struggle and the enclosures will loose heat on the coolside. I was not OK with 75 degree cool sides during winter at night when my house gets cooler. I do not allow any enclosure to drop below 79 degrees. I stepped up to 120 watt panels and turned down the power %. I suppose a happy medium would have been 100 watts but Bob did not have that choice years ago and Id rather have the juice incase my furnace broke during winter or something and the house got cold.
This is also why your Tstat is so important. Most cheap Tstats do not have Power % choices etc... my 120 watt panels run less and in return lowered my electric usage rather than a 80 watt running wide open 24/7 on 100% power.
Its about $20 difference between wattage on his RHP’s. Spend the extra $20 and be happy. Best of luck setting up your enclosure
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