Not really. Use German torq value, Gutentight. Had mine in for warranty work, not enough airflow through ducts from main a/c. Tech had to remove a/c and seal ducts. Then the rains came and the leak started. There are 4 lag bolts that are screwed in from the top, under the top cover. There is a foam type seal that sits on a plastic plenum that separates the in flow/out flow of a/c. Might want to have one handy before you take the unit out in case it tears. Mine is attached to the bottom tray of the unit and just sits on the plastic plenum. Just tighten it till it feels right, no real torque value.
