This replacement transformer is used for Laguna PowerClear Max 5000 UV sterilizer/clarifier. Also fits Laguna PowerGlo underwater pond light kit. Transformer with photocell sensor and timer. 88-Watts, 12-volts, 7-ampere fuse and 7-feet electrical cord. Packed in white box with label. Measures 11-inch length by 10-1/5-inch width by 7-1/2-inch height.