Antec P180 Advanced Super Mid-Tower
 

The P180 includes two separate compartments for cooling the internal drive
bays which Antec calls the Upper and Lower Air Filter Doors. Each compartment
includes a 120mm fan mount and swing away door that shields an air filter
which is attached to the internal chassis via 4 plastic clips. The air filter
aids in keeping dust from entering inside the case and is completely removable
when maintenance is required.