How would these subs go in?

-Just purchased this sub (all links will be shown below) and this box. Still am waiting for them to ship but I started looking at the sub, and... well I didn't see any screw holes on the front. Some on the back, but how am I supposed to get those when there is no other openings on the box. Maybe I am missing something, if so hopefully someone that has gotten these subs already can help me out.

Also I have read comments about getting a grill for the sub, do I have to? I mean I like the way the subs look already and I don't really want to buy a unnecessary thing.



The sub: http://www.sonicelectronix.com/item_2418鈥?/a>



The box: http://www.sonicelectronix.com/item_7566鈥?/a>



Thank you for your time and effort, it is greatly appreciatedthere are screw holes that match up with the back ones. if you look at the front there is a rubber ring that covers the outer ring of the sub. it just gives a cleaner appearance.