- Special bulb for ovens, grills, steam ovens, laundry driers, etc. ,- Heat-resistant up to 300° Celsius , ,Note for Consumers: ,Due to their technical properties, these special bulbs are not suitable for household room illumination. ,Depending on the ventilation of the oven light, the temperature of the illuminant may increase, shortening the service life. When replacing and using the illuminant, the safety instructions provided by the appliance manufacturer must be closely observed.