How much food fits in a 6.7 cu. ft. chest freezer?

Roughly a quarter of a side of beef or several weeks of family groceries. It is a step up from 5 cu. ft. models but smaller than 9 cu. ft. and larger chests.

Does it need to be defrosted by hand?

Yes. This is a manual-defrost freezer, so ice builds up on the walls over time and you empty it and let it thaw a few times a year.

Can I put it in a garage or unheated space?

It is freestanding and commonly used in garages and basements, but check the manual for the ambient temperature range before placing it somewhere that freezes in winter.

Which side does the lid open from?

The door is rehingable, so you can set the opening side to suit your space.

Does it have baskets or a light inside?

Expect a basic interior. Budget chest freezers in this class usually include a hanging basket or two at most, and no interior light.

How does it compare with a 5 cu. ft. chest freezer?

It gives noticeably more room for bulk buys while keeping the same top-opening, low-running-cost design. It takes up more floor space and is heavier to move.