The type of flat panel LED light to install depends on the size of the space you want to light. Panel lights are available in 3 different sizes for adaptable installation in ceiling grids: 2X2, 1X4, 2X4.
Additionally, you can choose from two configurations of LED panel lights:
Edge-lit panels: LED chips are placed on the sides of the panel for a thinner profile. This type of panel LED light is more expensive and uses more power than other types of LED lights.
Backlit Panel: For this type of LED panel light, the LED chips are placed on the back of the frame, not on the edges. This enables the LEDs to emit light directly through the diffuser. Because there is no lampshade, there is no need for directional lighting. Also, there is no glare as the diffuser smooths out the light. Backlit panels are faster and less expensive to manufacture than edge-lit panels—another reason they are so popular.