Abstract: Systems and methods to distribute airflow in an internal space of a transport unit are described. The airflow distribution system may include an airflow distributor forming an airflow passage with a roof of the transport unit. The airflow distribution system may be also configured to allow airflow to discharge from a gap between the airflow distributor and the roof. The gap may be provided by at least one spacer between the airflow distributor and the roof. A back end of the airflow distribution system may be configured to provide a back pressure to the airflow passage while allowing the airflow to discharge. In operation, a front end of the airflow distribution system may be configured to receive airflow. The airflow can be distributed along the airflow passage and be discharged from the gap and the back end.

Abstract: Systems and methods to distribute airflow in an internal space of a transport unit are described. The airflow distribution system may include an airflow distributor forming an airflow passage with a roof of the transport unit. The airflow distribution system may be also configured to allow airflow to discharge from a gap between the airflow distributor and the roof. The gap may be provided by at least one spacer between the airflow distributor and the roof. A back end of the airflow distribution system may be configured to provide a back pressure to the airflow passage while allowing the airflow to discharge. In operation, a front end of the airflow distribution system may be configured to receive airflow. The airflow can be distributed along the airflow passage and be discharged from the gap and the back end.

Abstract: The present invention discloses a novel device for notifying mailbox owners when their mailbox's door has been opened. The device includes a shaft slidably received in a housing which may be mounted to the mailbox. The shaft is based on a triggered position by a biasing means. The device is set by pressing the shaft against the biasing means and retaining the shaft in this position with a latch which may be mounted to the mailbox door and is operatively engaged with the shaft to overcome the force of the biasing means. When the mailbox door is opened, the latch retreats from the shaft allowing the biasing means to elevate the shaft so that the user can see it. In this way the user is notified of mail delivery or pickup.