LE 4 Pack 6W 3.5-Inch LED Recessed Lighting, 50W Halogen Bulbs Equivalent, Non-Dimmable, LED Driver Included, 310lm,90&deg; Beam Angle, Recessed Ceiling Lights, LED Downlight (Warm White) Pack of 4 units Save electricity bill. Replace 50W halogen bulb by 6W NOT DIMMABLE LED. Save over 85% on electricity bill of lighting Compact Dimensions. No big fixture house required. Mounting hole size: 3.54 x 4.3 x 2.56inches Easy Installation. Can be easily fitted to replace ordinary 3.5 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.