Here is one example with photo:

"Radiating Grill

An exclusive solution to professional cookers: the top of the oven is in transparent glass ceramic.
This reduces heating times when compared to ordinary systems, offering faster cooking and energy savings.
The glass ceramic top on the oven allows quick cooking time and is extremely easy to clean"

http://www.lofra.co.uk/proddisp.asp?ParentId=8&CatId=21

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Is this about barbecue? Another example:

"Feed the whole crowd with this party size propane barbeque! Perfect for grilling larger cuts of meat or fish with a huge 203 sq. in. cooking area and high efficiency 12,000 btu burner. A solid stainless steel corrugated radiating grill sears cross marks in food, while heat circulates through its perforations for... More
Feed the whole crowd with this party size propane barbeque! Perfect for grilling larger cuts of meat or fish with a huge 203 sq. in. cooking area and high efficiency 12,000 btu burner. A solid stainless steel corrugated radiating grill sears cross marks in food, while heat circulates through its perforations for convection-style roasting with no flare ups."

http://72.14.253.104/search?q=cache:olC9CIsBioUJ:www.shoppin...