A fan kit and the mounting hardware that holds everything else in place: the parts of a rack build that have no category of their own and get forgotten until the day the install stops for want of one.
The Middle Atlantic QFAN moves air through an enclosed rack, and Lever Lock brackets fit an enclosure once so accessories clip on without tools. Mounting a desktop firewall, switch or mini PC? That takes a rack mount kit made for the model; look yours up in the kit finder.
