Is it really 5 cubic feet?

The listed capacity is 3.2 cu ft, which is well below the 5 cu ft in the product name. Measure the interior and compare with what you plan to store before buying.

How often do I need to defrost it?

It is manual defrost, so ice builds up over time and you empty and melt it out. In a humid garage expect to do this more often than in a dry kitchen.

How cold does it get?

The range runs from 32°F down to -0.4°F (0°C to -18°C), which is cold enough for standard frozen food storage.

Is it quiet enough for an apartment?

The rated noise is about 38 dB, roughly a quiet conversation. Most owners would find that acceptable in a kitchen or hallway.

What comes in the box?

The freezer and one corrosion-resistant hanging wire basket. No drain hose or ice scraper is listed, so plan to supply your own for defrosting.

Can it sit in a garage?

It is a standard chest freezer, not a garage-ready model, so very cold or hot ambient temperatures may affect performance. Check the manual for the rated ambient range.