Product Description .aplus-v2 { display: block; margin-left: auto; margin-right: auto; } .aplus-v2 .aplus-3p-fixed-width { width: 970px; } .aplus-v2 .aplus-3p-fixed-width.aplus-module-wrapper { margin-left: auto; margin-right: auto; } if(P) { P.when("a-expander", "ready").execute(function (expander) { expander.initializeExpanders(); }); } Installation of polycarbonate sheets Pull out the knob and remove the top cover Take out the bottom two battery connection lines carefully Use a screwdriver to twist out the six screws of the PCB board and steel plate Replace the stabilizer on the steel plate to the polycarbonate plate After connecting the battery cable on the bottom, Find 3 of these cylindrical strips Align the polycarbonate plate directly to the column without any screws Cover the top cover, install the knob Successful installation