Specifications:- Each Overall Dimension(Dia.xH): 5 3/4" x 13/16" (14.6 x 2 cm)- Each Mounting Hole Size: 5 1/8" (13 cm)- Each Voltage: AC85-265 V- Each Power: 9 W- Each Led Number: 45- Each Color Temperature: 3000 to 3500 K (Warm White)- Each Luminous Flux: 720 lm- Each Beam Angle: 180°- Each Lifespan: 50000 Hours- Total Net Weight: 2.3 Lbs (1.04 kg)- Each Overall Dimension(Dia.xH): 5 3/4" x 13/16" (14.6 x 2 cm)- Each Mounting Hole Size: 5 1/8" (13 cm)- Each Voltage: AC85-265 V. Package Contents:- 4x Led Ceiling Lights- 4x Light Drivers. Notice: - Please note that the thickness of the light is 13/16" (2 cm) and make sure the wall thickness is within the range to install ceiling lights.