The Arcadia Eco-Aqua aquarium mounting frame consists of a pair of telescopic struts which mount inside the hood of a conventional rectangular, frame-top aquarium. The mounting legs support the installation of multiple Eco-Aqua lamps and the position of the lamps is fully adjustable. Three versions are available to suit different aquarium widths: Small frame is suitable for aquariums from 300mm to 426mm wide and holds up to four Eco-Aqua Lamps Medium frame is suitable for aquariums from 426 to 570mm and holds up to five Eco-Aqua Lamps Large frame is suitable for aquariums from 570mm to 714mm wide and holds up to six Eco-Aqua Lamps