... more than 22% Long working life Infrared ceramic plaque can be widely application to gas burner, grill, oven, BBQ, cooker cooktop, water ... shapes according to client's requirements.Technical data of infrared ceramic plaque:HoleRound holeSquare holeMaterialcordieritecordieriteVolume density0.45-0.65g/L0.45 ... : we can be customized as per client's requirements. Infrared ceramic plaque for gas burner