Based on this product's specifications, here are some alternatives and similar models
Connection kit for 2 solar collectors Immergas E.043202
Summary description:
Connection kit designed for linking two solar collectors to a heating or hot water system. Manufactured by Immergas (model E.043202), the set contains the necessary piping connections and fittings for integrating two collectors into an array. Suitable for use in residential or small commercial solar thermal installations where pairing two flat-plate or evacuated tube collectors is required.