In front of the hard disk drive cage there is a metallic door, where the dust filter is attached to and also where you can install up to two 92 mm fans (not included with the case) to cool down the hard disk drives. You must open this door in order to have access to the hard disk drive bays and to install them.

This door is opened by unscrewing two thumbscrews and just like the thumbscrews used to fasten the side panel they keep stuck to the door, so it is impossible for you to lose them.

Also, just like the frontal panel this door uses two metallic hinges opened on top, so you can swing the door to your left-hand side or completely remove it in order to make it easier to install the hard disk drives.

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Figure 18: Cage door opened.

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Figure 19: You can remove the cage door by lifting it.

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Figure 20: Cage door removed from the case.  You can install two 92 mm fans here.

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Figure 21: The thumbscrews are permanently attached to the door, making it impossible for you to lose them.