The Cal Spas Topside Controller by Balboa is a temperature control panel made of plastic, measuring 3-1/2 inches in height, 9 inches in length, and 2-1/2 inches in depth. This controller allows users to easily adjust and maintain the temperature of their spa or hot tub, providing convenience and functionality for outdoor living spaces. With the trusted Balboa brand behind it, this topside controller ensures quality and reliability for spa and hot tub owners. This is a used part expect dirt and light scratches but should perform as intended. Topside will need to be siliconed to the spa shell. This is for the fiesta line E8 Cal Dupx.