Know your gear
The cable port brush kit is used to cover the large cable knockouts in the cabinet's top panel. The kit includes two 3.9" W x 8.8" D brush-sealed grommets that snap into the opening on the top panel once the large 4.5" W x 9.0" D knockout is removed. The split design also allows the grommet to be temporarily removed to pass large three-phase 60-amp PDU power plugs up to 4.5" W in diameter through the knockout when PDUs are added or removed. The standard top panel and accessory fan top panels have four large cable knockouts. The vertical exhaust duct top panel has two large cable knockouts.