Movemos cestas de ropa antes de abrir tapas abatibles.

Movemos is the 1st person plural present indicative of mover (to move).

So it literally means we move.
Depending on context, English might translate it as:

• we move
• we are moving
• in procedural language, something like we move / let’s move

Spanish present tense often covers both the simple present and the present continuous, depending on context.

Because Spanish usually does not need subject pronouns.

The ending -emos already tells you the subject is we. So movemos by itself already means we move.

You would add nosotros only if you want to:

• emphasize the subject
• contrast it with someone else
• avoid ambiguity

For example:

• Nosotros movemos cestas de ropa, pero ellos abren las tapas.
  We move the laundry baskets, but they open the lids.

Grammatically, it is a statement in the present tense: we move...

However, in manuals, procedures, training materials, or step-by-step instructions, Spanish sometimes uses the present tense to describe what is done in each step. So it can feel a bit like an instruction or procedural description.

In Spain, if you wanted a more direct command to a group, you would more likely use:

• moved = move (plural informal, vosotros)
• movamos = let’s move

So:

• Movemos cestas de ropa... = procedural/descriptive style
• Moved las cestas de ropa... = direct instruction to a group
• Movamos las cestas de ropa... = let’s move the baskets

Spanish often uses de + noun where English uses a noun as an adjective.

So:

• cestas de ropa = literally baskets of clothing/clothes
• in natural English: laundry baskets or clothes baskets

This is a very common Spanish pattern. For example:

• cepillo de dientes = toothbrush
• mesa de comedor = dining table
• máquina de café = coffee machine

Here, de ropa tells you what kind of baskets they are.

Yes, it could, but it is not exactly the same nuance.

• cestas de ropa usually identifies the type/category: laundry baskets / clothes baskets
• cestas para ropa emphasizes purpose: baskets for clothes

In many contexts, de ropa sounds more natural as a label or category name.

Because after antes de, Spanish normally uses an infinitive when the subject is the same or when the action is expressed generally.

So:

• antes de abrir tapas abatibles = before opening folding lids

This is a very common structure:

• antes de salir = before leaving
• antes de comer = before eating
• antes de empezar = before starting

If the subject changes, Spanish often uses antes de que + subjunctive instead:

• Antes de que el operario abra las tapas...
  Before the operator opens the lids...

Because those forms are not grammatical here.

After antes de, you use:

• infinitive: antes de abrir

If you want a full clause with its own subject, then you use:

• antes de que + subjunctive

For example:

• antes de abrir las tapas = before opening the lids
• antes de que abran las tapas = before they open the lids

So antes de abrir is the correct structure in this sentence.

Tapas means lids, covers, or sometimes flaps, depending on context.

Abatibles is an adjective meaning something like:

• folding
• hinged
• flip-up
• fold-down

So tapas abatibles means folding lids, hinged lids, or flip-up covers, depending on the object being described.

It sounds fairly technical or practical, which is common in instructions and product descriptions.

Because the adjective has to agree with tapas.

• tapa = singular feminine
• tapas = plural feminine

Abatible is an adjective ending in -e, so the singular form is the same for masculine and feminine:

• tapa abatible
• cierre abatible
• panel abatible

For the plural, you add -s:

• tapas abatibles

So the plural form abatibles agrees with tapas.

Because in Spanish, descriptive and classifying adjectives usually come after the noun.

So this is the normal order:

• tapas abatibles
• puertas correderas
• mesas plegables

Putting the adjective first would sound unusual here and would not be standard technical Spanish.

This is one of the things learners often notice. In Spanish, especially in:

• instructions
• labels
• technical writing
• concise procedural language

articles are sometimes omitted, especially with plural nouns.

So Movemos cestas de ropa antes de abrir tapas abatibles is understandable as a concise procedural sentence.

A fuller, more everyday version would often be:

• Movemos las cestas de ropa antes de abrir las tapas abatibles.

That version sounds more explicit and more natural in ordinary prose if you mean specific baskets and specific lids.

Yes, it is understandable, but it sounds a bit technical, concise, or procedural rather than conversational.

In everyday Spanish, many speakers would probably prefer:

• Movemos las cestas de ropa antes de abrir las tapas abatibles.

or even:

• Antes de abrir las tapas abatibles, movemos las cestas de ropa.

So the original sentence is fine, but it has the feel of a manual, a process description, or a short operational instruction.