Panasonic Home and Environment expands its WhisperGreen Premium ventilation fans with two new models, FV-08VKSL1 and FV-08VKML1, both offering a new light and nighlight features. The fans, which are Energy Star rated and HVI certified, are designed with the company's DC motos, built-in controls and lights. Both feature CustomVent variable speed control that allows them to run continously at a preset lower level.