Hot Tub and Spa PC Boards › Marquis MQL15UR1 Circuit Board 600-6302 Image 1 of 2 Image 2 of 2 Marquis MQL15UR1 Circuit Board 600-6302 $619.00 PCB, Marquis, Mql15Ur1 Brand: Marquis Spas Chip Number: MQL15UR1(x) Add To Cart Added! PCB, Marquis, Mql15Ur1 Brand: Marquis Spas Chip Number: MQL15UR1(x) Customers also purchased Marquis MQBP20UX Circuit Board 600-6315 $489.00 Balboa VS520SZ Circuit Board G1157 / 33-55151-K $0.00 Balboa VS511Z Circuit Board 33-54383-K Sale Price: $299.00 Original Price: $365.00 Sale Sundance PCB LED No Circ pump 2012 printed circuit board 6600-720 Sale Price: $479.00 Original Price: $599.99 Sale Coleman 100 Series Circuit Board 101285 $399.00