This compact, ceiling-mountable 3-LCD projector can be used for applications in the fields of education, industry and business. To hold up under long use in demanding environments, it uses an electrostatic filter to repel contaminants, such as dust and tobacco smoke. We paid careful attention to the many design considerations that apply to ceiling projectors, including the ceiling color, balance with other equipment, a subjectively non-oppressive shape, and a slender look that fits the installation space. We also kept in mind the lettering and icon size and the indicator position, as well as maintenance issues, providing single-site filter replacement.