In one example, a media guide for use with a print bar includes a plate suspended over the print bar to guide a leading edge of print media away from printheads on the print bar during printing when the print bar is installed in a printer. Said container can be locked with a single locking mechanism in collapsed folded position or in fully open position with items inside. The airway tube defines an internal passage and a first notch. An output of the same alarm information or alarm information irrelevant to its own vehicle is prevented. A break detector detects breakage of the first wire device if the elapsed time becomes equal to or longer than a predetermined time. To mount the vent in a brick wall, the right angle flanges are attached to underlying framing and an L-shaped lintel supports the course of bricks overlying the vent.