Features:With this item you can control which side of the "Y" gets the hot airyou can also allow one side to get more hot air than the other or none at all (you can close one side totaly)With 2 closeable open regulating valve. Initial installation.Additional outlet to an existing system.Efficient split the flow of warm air from your heater.Fitment:For Eberspacher For Webasto For Propex HeaterSpecification:Product Name: Y Branch Outlet Connectorsize:60mmMaterial:ABScolour:BlackPackage Contents:1 x Y Branch Outlet ConnectorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.