The InteLED 1 Light 18 Watt Under Cabinet Light Bar is the deliberate use of light to achieve a practical or aesthetic effect. Indoor lighting is usually accomplished using light fixtures and is a key part of interior design. Proper lighting can enhance task performance, improve the appearance of an area or have positive psychological effects on occupants. Aluminum and acrylic construction Ceiling mount installation Features a rectangular shaped acrylic shade Sturdy mounting assembly keeps fixture firmly placed Dimmable Bulb included All mounting hardware supplied ETL rated for dry locations Bulb Base and Compatibility LED - Light Emitting Diode: Highly efficient integrated diodes produce little heat and have an extremely long lifespan Key Features & Innovations ETL Listed Fixtures bearing these marks are certified by these accredited testing laboratories, assuring the construction and electrical components meet or exceed all safety requirements.