Virtuoso Composite Door Sets The Virtuoso Composite Door Sets are the main range you’ll see in the Composite Door sector. These are provided as full sets with the door pre-installed into a PVC frame with all of the accessories (hinges, multipoint locking mechanism, handles, letterbox) already installed. These door sets all come with a choice of 12 different colours for the external face of the door, the internal face and PVC frame are both supplied white but for an extra cost can also be your choice of colour. These door sets are extremely easy for joiners to fit as supplied as a pre-installed set and come with the Secured by Design rating which is the police preferred specification in the UK.