Abstract: A retractable door assembly for an entrance/exit of a portable shelter comprises a door having a panel of flexible material. The door is rolled onto the support rod. Supports are operatively connected to ends of the support rod and are adapted to connect the support rod on a structure of the portable shelter with respect to the entrance/exit of the portable shelter, such that the support rod is rotatable about its longitudinal axis. An actuator system is operatively connected to the support rod to actuate a rotation of the support rod to deploy the door to close the entrance/exit and retract the door to free the entrance/exit of the portable shelter.

Abstract: The interior of a mailbox is illuminated with a highly efficient LED lamp powered by a rechargeable battery. The LED lamp is turned on when the mailbox door is opened. A solar panel is mounted under a light-transmitting cover located on the roof of the mailbox for recharging the battery. The illumination system is for the most part composed of a pair of compact modular assemblies which are carried by the mailbox.