The Gallagher 19 Inch Rack Mount Power Supply Tray allows up to 4 x C200440 8A Power Supplies or 8 x12Ah backup batteries to be mounted within most 19 Inch Rack enclosures. 3U high and 320mm, the Power Supply Tray can be mounted below C300125 19 Inch Rack Quad Mount, Cool Grey and behind the Quad Mount in deeper (9000mm) server racks. Made to order upon request.