Of course it is a stopgap, because a microwave is not a furnace. You have the laws of physics note: the part eats microwave energy to heat up even and not too short! When a frozen pizza you have to double the cooking time almost, of 6 minutes (at 800 W power) to 10 min. And you need a microwave with grill function, so the pizza crunchy is also top. The good news: the part works on any microwave with grill function, so it must not be of the brand Whirlpool. Am quite satisfied.