45 is a bit high but it can still work. You may want to store at 45 for a longer period of time. Noonan recommends lagering at 30-35 for at least a month for a 5 gallon batch. You may want tot extend the time to 2 months.
Does the fridge have a freezer section large enough to lager in? Waht temperature is that at?
Das Leben is zu kurz um schiess Bier zu trinken