The definite article before a noun, if another noun + a numeral are present before as an identifier?

Question

I know that one may not use the definite article before "noun + numeral" constructs, like "floor six", "room twenty five" etc.

But should it be used in constructs where "noun + numeral" are like an identifier or name, for instance:

(the) "block 6" item, (the) CSS 2.2 specification?

Answer 1

Yes, because you are talking about the item. You wouldn't say the six unless there were more than one choice of six. You might take the floor six stairs to get to floor six.