How do I defrost the Avanti CF7F0W?

Unplug it, empty the contents, and let the ice melt with the lid open. Wipe out the water, then restart it and let it pull down to temperature before reloading.

Can it go in a garage or unheated space?

It is a freestanding manual-defrost chest, so it tolerates utility spaces better than frost-free models. Check the owner's manual for the ambient temperature range before placing it in extreme heat or cold.

Does it have a basket or divider?

The listed configuration does not include an interior basket. Plan on your own bins or baskets to keep smaller items reachable at the top.

No. It is manual defrost, so frost builds on the interior walls and you remove it yourself every few months depending on humidity and how often you open the lid.

What are its dimensions?

It is about 33 inches wide and 33 inches deep, and it runs on standard 120V power. Measure your doorway and alcove before delivery, since chest freezers need clearance for the lid to open.