The Apollo Dual Finish Satin Chrome with Polished Stepped Edge (P) is part of the Heritage Brass Contractor range. It comes with a raised plate and a stepped edge - the plate is in satin chrome while the edge (stepped edge) is in polished chrome; hence, a dual finish. It has visible screws on the plate and square corners. The rockers and inserts are white or black plastic, and the plate style is not suitable for dual box application. This dual finish satin chrome plate/polished chrome edge has a profile of 8mm and it conforms to relevant British wiring Standards. The dimensions for the plates are 92mm x 92mm for single and 148mm x 92mm for the double plates. It has a plate profile of 8mm and it conforms to relevant British wiring Standards.