Installation ManualULPOWERUL390i UL390iS 390iSAMI 390A01 Revision No: 3Date:2014-09-15Page:31of69Exhaust systemUnless otherwise agreed, the motor will be delivered with the UL power exhaust system. The systemis designed to reduce the noise to an acceptable level without loosing power.Dimensions of the exhaust system:1 ) With muffler2 ) With 3 in 1 collector