This part calledAir Guide Acommonly needs replaced if the magnetron in your Panasonic Inverter oven has failed due to over heating. The air guide often melts and becomes warped. It is recommended that this part is replaced if it is partially melted as its failure can restrict the air flow over the magnetron. It is also possible that the lamp will not seat correctly when the air guide is melted.The magnetron in this type of microwave oven leads a hard life and efficient air flow through the magnetrons cooling fins is important. This part may need to be replaced along with the magnetron type 2M236 as shown in our microwave parts section. There are different air guides used in some models but the type shown is by far the most common. Compare the air guide you have to the one shown in the photographs. If you purchase this item for replacement in your microwave then we recommend that you do this only if you skills in repairing electrical appliances.