My Life in 100% Cotton
Those exhaust port covers are pretty big. They must have really been needing that smoke.
The exhaust ports covers on the new X18 shuttles are a lot smaller, easier to close, however, the central cargo bay tends to become infested with geeks.
After the Death Stars destruction, rumors of an undelivered two-meter wide exhaust port cover being discovered in a Coruscant warehouse remain unconfirmed. God I so wish I was making that up...