Edge-lit LED panel lights consist of a row of LEDs attached to the frame (or perimeter) of the panel, which shine horizontally into the light guide panel (LGP). The LGP directs the light downwards and through the diffuser into the space below.
Edgelit LED panels are sometimes referred to as sidelight panels. Some offices or commercial buildings might prefer the thinner design and lighting effect that edgelit LED panel lights to offer.