Item Detail Table of Content Exhaust Extraction Exhaust, Acc / Misc 3" Overhead Duct Connector Item Number: CPTOC30 Supplied by CRUSHPROOF TUBING CO (see all) Price: $37.40* * log in for dealer pricing. Direct from 3rd Party Supplier Add To Cart Description 3" Overhead Duct Connector. Warranty Product is warranted to be free of defects in workmanship and materials of time of receipt.