De or het randafzuiging?

The correct Dutch article is:

de randafzuiging

Rule Words ending in -ing: almost always de. See the rule

How to use randafzuiging

the randafzuigingde randafzuiging
this randafzuigingdeze randafzuiging
that randafzuigingdie randafzuiging
our randafzuigingonze randafzuiging
your randafzuigingjouw randafzuiging
every randafzuigingelke randafzuiging
which randafzuiging?welke randafzuiging?
a big randafzuiging / the big randafzuigingeen grote randafzuiging, de grote randafzuiging