Pros
This panel is very thin (1/4“or 3/8”), and an onyx sheet can be placed right on the face or on top of it, with no gap. There are holes on the panels that allow easy installation, by simply screwing it to the wall behind it. Once the panel is secured, the installer can place the Onex sheet on top or in front of it. This panel can be made with warm white or cool white LEDs, as well as with RGB (changing color) LEDs.
Cons
The maximum size that this panel can be made is 48” X 96”. So, to cover large areas, you would need to use multiple panels, which would give you some hot spot areas. Moreover, larger panels are not as bright as smaller ones, since the LEDs are placed on the edges, and the wider the panel, the less light per area unit is distributed. Which brings us to another con, and that is uneven light throughout the sheet. Although manufacturers use special software in engraving the acrylic to give an even light, the area close to the edges is brighter than the rest of the panel. Also, if the stone is placed right on top or in front of the panel, although LEDs have “Heat Sink” on them, the heat generated by the LEDs can stay behind the stone, and over time may affect the lifetime of the LEDs.