User Manual Toshiba ML-EM34PSS Microwaves

When you are facing the microwave, the vent is on the right side
of the back of the microwave and on the left side of the
microwave, one is the air inlet and the other is the air outlet.
Actually, this is a Countertop Microwave Oven, we do not
recommend you use this model for any built-in application as it
was not designed for that type of installation. However that will
be OK if you make a proper installation, a minimum clearance of
3.0 inches (7.5cm) is required between the oven and any
adjacent walls. Also, one side must be completely unenclosed.

If the door is opened while the appliance is operating, then it will
stop cooking and will be required to restart the cooking when the
door is closed once again.

Yes, you can set the timer for other than full minutes or 30
seconds. For example, To cook the food for 15 minutes. you should
press "1, 5, 0, 0" in order for 15:00 to appear in the display.