It looks the same as the trad heater box. If it is there should be a pipe either side near the bulkhead. On older cars MMC piped that through the firewall. Now they just drain in to footwell.
I would fit a cover if it sits outside.
Famous other leak points are the wiper arm bevel box seal to the bulk head which new seals and a smear of silicone can help & the to screws that hold on the
bonnet hinge which can be filled with silicone sealant.
