Set of 4 modern Satin Chrome GU10 fire rated adjustable recessed tilt downlights. Suitable for bedrooms, children's rooms, dining rooms, hallways, kitchens, living rooms, porches, study & utility rooms. 11.3 cm height x 9.6 cm diameter x .3 cm projection. Cut out required 8.6 cm. Fully tested for installation in 90 minute fire rated ceilings. This product is suitable for use with LED bulbs and when paired with a dimmable bulb can be dimmed. This product is compatible with most domestic smart light bulbs. Always check bulb length against product dimensions to confirm suitability. 4 x 50W Max GU10 Halogen (required).