Will my caravan awning accommodate an annexe extension?

Most of our caravan awnings can accommodate a left/right hand fitting annexe, with the exception of our porch awnings, which include the: Elan 280, Elan 340, Porchlite 200, Porchlite 260, Porchlite 200 Air, Porchlite 260 Air and Porchlite 260 Air L. Please note that each range has a designated annexe and these are not suitable for use with other products within the collection.