I don't know about this particular product,but have you looked at the restaurant supply places? Two websites I have used are KaTom and Bridge Kitchenware.
Anyone know where to buy racks that I can use with half sheet pans? When I search for such products all I can find are cooling racks, or non-stick racks. I'm looking for high quality (stainless steel or similar) racks that can be used for broiling or high heat baking. Thanks.