Knightsbridge Pattress Box – Single and Double Square Edge for use with the Knightsbridge Square Edge (SN) series of wiring accessories, also suitable for general purpose use. Features: 25mm (Single) – H:87mm W:87 D: 30mm 35mm (Single) – H:86mm W:86 D: 40mm 47mm (Single) – H:86mm W:86 D: 52mm 35mm (Double) - H:86mm W:146mm D: 40mm 47mm (Double) - H:86mm W:146mm D: 52mm Please note: If you require a larger quantity than listed, please get in touch and we will provide a separate quote. Require faster delivery? Then please get in touch before making the purchase as additional deliveries will apply and this is available on all orders placed before 3pm.