Dual Exhaust Connection Car-Mon Products provides a convenient and cost efficient method of providing dual exhaust connection from a single drop with their new Series RYA EPDM Dual Connector with optional ROC EPDM adapters. The standard unit comes with dual fitting with tapered nozzle, 2 lengths of 3" x 5" Nu-Flex tubing and 2 RO-3 EPDM adapters.