I didn't think too much of the FB and grates that came with the Genesis 1000 and just set them in a corner to be tossed for I was planning to buy new. While moving around it came to view again and decided to put a magnet on it just for kicks. It didn't stick.... I tried another magnet (granted its magnets pulled from a same hard drive) and also didn't stick. Tried it on the FB and burner and it too didn't stick. I tried it on the frame and magnetized so I know these magnets work. I was just a bit puzzled for I thought grates that looked like this were porcelain steel? Upon closer inspection, no porcelain. I've only seen stainless steel grills with rods. Did they used to make it this way in the past and rods are the newer version?