The Flat Plate Screwed range of decorative wiring accessories were designed with form and function in mind. They boast a 25 year guarantee, large clearly marked terminals with captive screws allowing quick and easy installation, they fit in to standard back boxes using 4mm cable for ease of installation, top access terminals on sockets, discreet gasket to protect from damp plaster and come with a choice of 30mm and 50mm fixing screws