https://www.juniper.net/documentation/us/en/hardware/srx5600/topics/concept/srx-3400-5600-air-deflector-kit.html
SRX3400 and SRX5600 Firewalls Air Deflector Kits | Juniper Networks
Optional air deflector kits are available that let you install the SRX3400 and SRX5600 Firewalls in a hot aisle/cold aisle ventilation environment. These kits...
air deflectorsrx3400srx5600firewallskits