There were a lot of these type of grills back in the day. Most were very similar looking and shared pretty much the same design traits. The familiar bow tie or H burner along with a tray for lava rocks or ceramic briquettes. Weber started with these designs when they came up with their own take on a gas grill in 1985. Very well made in the USA like most things then, these early gas grills offer an interesting look at gas grilling before Weber hit the scene. It is interesting that some of these early brands, like broilmaster for example, continue to make grills today.
