Recessed downlight. Suitable for all rooms, bedrooms, children's rooms, dining rooms, guest rooms, hallways, kitchens, living rooms, porches, study & utility rooms. 11.7cm height x 9.4cm diameter. Cut out required 8.3cm. This product is suitable for use with LED bulbs. This product is compatible with most domestic smart light bulbs. Always check bulb length against product dimensions to confirm suitability. 10 x 4.2W LED GU10 (included). 2700K (warm white). 360 lm. 85.7 lm/W. 15,000 lifetime hours. 80 CRI. 36˚ beam angle. Class I-earthed for your safety.