I'm getting back into bettas thanks to @Irene and Foo the Flowerhorn. Does anyone know of where I can purchase a heater cover like the one used in the attached image? The heater that I have currently and want to use is an Aqueon 50W without the suction cups. I had thoughts of using this guard but I'm unsure if it will fit + FakeSpot has flagged the seller with warnings.
Image is a screenshot from this video by Foo the Flowerhorn.