Netafim's Dual Dosing Channel Kit are designed to increase the number of channels one can apply to the standard manifold frames of Netafim CMT units.  For example, the Fertikit 3G range has a standard manifold structure accommodating 4 x channel points.  The Dual Dosing Channel kit can be applied to the first and last channel points, expanding the original 4 to 6 x channels.  The Dual Dosing Channel Kit is only applicable with 50l/hr, 600l/hr and 1000l/hr Venturis.