How many slots are there for additional fans, and what size?
1337268
The fan size is 120mm or 140mm for the sides. The case came with a large fan on top, 200mm if I remember correctly. I have 4 120mm fans on the inside, one 200mm on top. Cooling is not a problem. I do not recall how many it has slots for, but it came with three 120mm. I replaced them with all red leds, looks really nice. Check with Cooler Master Web site for additional specs ensure it meets your needs.
1337269
It depends on your setup, stock you can add 3, two on the side panel and one on the bottom. I use a water cooled system so I use the rear 140 mm and turned the two led 120's to draw from the front. I have the H100i mounted in the top so up there I have two 120mm fans. The case is huge so you should have no problem keeping it cool with the stock setup.
1664511
only 1,but can install 3 given the right circumstances, most use 2 without issue though, all 3 are the larger size fans as well {120mm fan}
1074718
I have seen multiple configurations (SKUs) of this case over the past several years that offer various numbers and types of fans. Its confusing, and kind of silly, but its true. So the best answer I can think of is to advise potential buyers to ask the seller directly about which SKU they are selling, and how many fans, what size fans, and if the fans are lighted, what color, etc.
662059
Yes you can add two fans on the left side panel, but I don't recommend doing so because adding two fans on the side will obstruct the airflow.
482599
2 x 120 or 140mm fans can be installed on the top2 x 120 or 140mm fans can be installed on the side1 x 120mm fan can be installed on the front1 x 120mm fan comes pre-installed on the back
1051159
This tower has space for around 8 of the standard large fans. Think they are 120mm. The best fan setup is to pull cool air in on the bottom, front, and side. While pushing the warm air out the top and back, since warm air rises this is always the best setup to get heat from the case. Only issue is bottom fan is a little tricky to get in with your power supply and graphics card all down there it gets crowded. But it all fits. I could only my fit one fan on the bottom.
1109052
I comes with one 120mm in the rear and has a 120mm port in the front and has two 90 or 92mm door fan spots. I haven't needed to use them. In the past, I have put fans on the inside just to push on my graphics card. So you could put 4 or 5 fans on it but it would be overkill for my system. Does that answer your question?
581161
Looks like it supports 5 fans total. One big entry fan in the front that you can see in the pictures comes preinstalled. Two 80mm exits in the lower rear. Then one more 80mm in the upper rear next to the power supply. It looks like a 60mm could go on the floor of the upper deck.
319058
Just for future reference when others want the info, here's the mfr. website specifications link. In the cooling section it states all fan slots are capable of 120mm & 140mm. http://www.fractal-design.com/home/product/cases/define-series/define-r4-black-pearl
1664509
1 included 120mm fan (exaust) with a pretty bright blue LED. I have maxed out the arrangement with 4 additional fans (one next to the PSU, one in bottom front where the ThermalTake logo is, one on the side panel, and one one top. There is space for another fan on the top, but that fan has to be super slim because the 4+4 CPU power will block it.
751316
It does not have fan slots. It does contain a fan for the hard drive bay and the big fan over the board. It's open frame design lends itself to not needing more
694298
it depends on your motheboard was build with pci e. but if your question is how many cards it could hold? 7. i using 3 vid agp, 2 pci e & 2 normal slots. this box is huge i`ve have 9 fans. 5 dvd. 7 harddrives internal 2 ext & still have room 1000 watt power. buy nzxt fans only no choice screw holes made only for nzxt
700988
They lined up with all the holes in all locations on my computer. I put in 4 of them. It has been long enough now that I don't remember the size of the fans I replaced.
442157
200mm side panel fan, two front-mounted 120mm fans, and one rear 120mm fan are included
2162139
This case has room for one 80km 90mm or 120mm exhaust fan in the back of the case and you can also connecct a fan to the side vent, up to 120mm. So two 120mm fans total should be all.
2225106
A 140mm in the rear and the front has a 200mm. It will accept quite a few more as well. The fans are some of the best you can get
2128486
two fans. One is attached to the front, and one is attached to the back. 140mm fans.