Retrofit installation can be entirely form the room-side with no attic access required, Retrofit installations can be done entirely from the room-side, no attic access required. This means a faster, easier installation, EzDuct(TM) connector can be installed from the room side, with no attic access required, Foldable mounting ears allow for easy installation in both new construction and room-side replacement applications, Polymeric damper/duct connector with tapered sleeve and no metallic clatter