TV twice to complete series? (3-3)

I believe the answer is:

box-set

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'complete series?' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'tv twice' is the wordplay.
'tv twice' can mean two replacements for 'tv'.
'tv' becomes 'box'.
'tv' becomes 'set' (a television set).
'box'+'set'='BOX-SET'

'to' is the link.

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I've seen this clue in the Sydney Morning Herald.

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