Hayward GLX-PCB-PRO Main PCB Replacement for Haywardbr br Featurebr * Main pcb replacement br * Fits hayward goldline aqua logic automation and chlorination models aql-ps-4, aql-ps-8-v, aql-ps-8 aql-ps-16-v, aql-ps-16 br * Genuine hayward replacement part br * br This main PCB is designed to use with all Hayward Goldline Aqua Logic automation and chlorination models AQL-PS-4, AQL-PS-8-V, AQL-PS-8 AQL-PS-16-V, AQL-PS-16.