LE Pack of 4 Units 4W 3-Inch LED Recessed Lighting, 30W Halogen Bulbs Equivalent, Not Dimmable, 210lm, Warm White, 3000K, 90&deg; Beam Angle, Recessed Ceiling Lights, Recessed Lights, LED Downlight Pack of 4 units Save electricity bill. Replace 30W halogen bulb by 4W NOT DIMMABLE LED. Save over 85% on electricity bill of lighting Compact Dimensions. No big fixture house required. Inner diameter is 2.95in. Outer diameter is 3.5in. Height is 2.36in. Easy Installation. Can be easily fitted to replace ordinary 3 inch recessed light fixture. No additional accessories are required. Lower Maintenance Costs. Extremely long life reduces re-lamp frequency. Save your effort to replace bulbs in high ceiling.