Крупногабаритные вещи нужно вывезти не позднее чем завтра.

It means bulky items, large-sized items, or oversized things.

• крупно- = large
• габарит = dimensions / size / overall measurements
• крупногабаритный = large in physical dimensions, bulky, oversized
• вещи = things / items / belongings

So крупногабаритные вещи is a fairly formal way to say bulky items—for example, old furniture, large appliances, or other big objects that need to be removed.

Because it agrees with вещи in number, gender, and case.

The dictionary form is:

• крупногабаритный (masculine singular)

But here it describes вещи, which is:

• plural
• inanimate
• feminine in the singular, but that does not matter in the plural in the same way

So the adjective must also be plural:

• крупногабаритные вещи

This is the normal agreement pattern in Russian: adjectives match the nouns they describe.

Here it is accusative plural, because it is the direct object of вывезти.

The tricky part is that for inanimate plural nouns, the accusative looks exactly like the nominative:

• nominative plural: вещи
• accusative plural: вещи

So even though the form looks like nominative, its function in the sentence is accusative: these are the items that need to be taken away.

This is a very common Russian pattern for saying that something is necessary, required, or must be done.

• нужно вывезти = it is necessary to remove / one must remove / needs to be taken away

This construction is impersonal. It does not say who exactly must do it. English often uses passive or vague wording in the same situation:

• Bulky items must be removed...
• Bulky items need to be taken away...

So the sentence focuses on the required action, not on the person responsible.

You could also hear:

• надо вывезти — more conversational
• необходимо вывезти — more formal
• должны вывезти — this would introduce an implied subject, like they must remove

Because вывезти is perfective, and the sentence is about completing the action by a deadline.

• вывезти = to take/remove something away completely, as a finished action
• вывозить = imperfective, focusing more on process, repetition, or general activity

Since the sentence says by tomorrow at the latest, the idea is:

• the removal must be completed

That is why the perfective verb is natural here.

Compare:

• Нужно вывезти вещи до завтра.
  = The items need to be removed by tomorrow.
  Completed result matters.

• Нужно вывозить вещи каждый день.
  = The items need to be taken out every day.
  Repeated process.

The prefix вы- often gives the idea of out, out of, or from inside to outside.

Base verb:

• везти = to transport, carry by vehicle, haul

With вы-:

• вывезти = to transport out, remove, take away

So вывезти suggests taking something out from a place—for example, out of an apartment building, a yard, a storage area, or a city zone.

That is why it fits well with bulky items: they are not just being moved in general, but removed from where they currently are.

Because вывезти usually suggests transporting something away, often something large, heavy, or requiring a vehicle or organized removal.

• вынести = carry out by hand / bring out
• вывезти = haul away / transport out

For крупногабаритные вещи, вывезти is much more natural, because such items are often too big to simply carry out in the ordinary sense. They may need a truck, special disposal, or removal service.

So:

• вынести мусор = take the trash out
• вывезти старый диван = remove/haul away an old sofa

не позднее чем завтра means:

• no later than tomorrow
• by tomorrow at the latest

This is a fixed comparative expression:

• не позднее чем... = no later than...
• не раньше чем... = no earlier than...

There is no comma before чем here because чем is part of that set expression, not the start of a full subordinate clause.

So Russian treats не позднее чем завтра as one unit of meaning.

Here завтра is an adverb of time, meaning tomorrow.

Because it is an adverb, it does not change form for case the way nouns do. So after не позднее чем, you simply get:

• не позднее чем завтра

This may feel unusual to an English speaker because after than in English, you expect a normal time expression without worrying about case anyway. In Russian, the reason it stays unchanged is specifically that завтра here is an adverb, not a declined noun.

Yes. Russian word order is fairly flexible, and the sentence could also be:

• Нужно вывезти крупногабаритные вещи не позднее чем завтра.

This has the same basic meaning.

The original version:

• Крупногабаритные вещи нужно вывезти не позднее чем завтра.

puts крупногабаритные вещи first, which highlights what exactly needs to be removed. This is very natural in notices, instructions, and rules.

So the difference is mostly about focus and information structure, not about core meaning.