[Rod#S]

Hi;

I have a curiosity question I've always wondered about. Where are the cabinet side magnets for the grills actually located? Does anyone know? I assume it's one of two places either adhered to the inside of the cabinet or somehow built into the cabintes themselves which would be more intriguing. Either way they must be failrly strong magnets to hold the atttraction to the grill magnet through the wood.

Thanks