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Some do have recessed vent areas but they usually do that to add a bigger drum, the best bet is to get a telescopic duct vent or the mag vent that will line itself up with the help of a magnet making install a breeze and helping unit sit flusher. Most manufactures ask for 4-6″ of clearance behind it for the unit to breathe properly.
https://www.magvent-dryervent.com/