Inspiron 7000 Gaming Question

Usually, accessories are included, for example the ColdCool vacuum cooler
Try finding the specifications and accessories on the manufacturer's or seller's page 
for your vacuum cooler of intrest.

What do you mean? I know that there are many "front thing" on it. But do one of them fit?

Simply measure your system's ventilation outlet and compare it with the specifications of your favorite vacuum cooler, as long as the specifications are mentioned on there site.

For an example