1.Plastic Housing, the housing is a key part of the panel light, the housing with high compressive strength makes the panel light more durable. The materials used in the shell of the LED panel light are different, and the heat dissipation performance is also different. Multi mount extra slim panel light(back light) is made of all-plastic material as the lamp body shell, which has good heat dissipation, excellent hardness, compression resistance and durability, and conforms to CE/CB Standard. 2. Recessed-Surface Convertible, save stock, Light and dark installation conversion, relieve inventory pressure. 3.Back light, LED panel lights have two types: direct type and side lighting. The direct-type panel light has sufficient brightness, direct light emission, high luminous efficiency and advantages in cost control. multi mount extra slim panel light(back light):https://www.xjledlighting.com/multi-mount-extra-slim-panel-light.html