do NOT use particleboard .. it can't handle high humidity and moisture, will start swelling, and fall apart :wtf: ... I'm switching to 'tileboard' for my next cabinet, it's the stuff they use to make 'dry-erase marker boards' ... Home Depot sells 4'x8' sheets for about $12 apiece ... they are called 'tileboard', made specifically for wet areas (bathrooms, showers, etc) ... it's a formica-like material, only 1/8" thick, with a white porcelain-like finish on one side (you wouldn't need your panda plastic) ... totally washable and reasonably tough finish ... I took my light meter with me to HD, and tested everything they carry for light reflectivity ... the tileboard won, similar to flat-white paint... I'm framing mine with 1"x2"s, as there's not much weight with these panels ... P.S., go with a taller cabinet, by the time you subtract the height of the containers, and the distance from the lamp, you will only be able to grow a 24" plant ... yes, you can successfully grow 24" plants, but you're working with a plant that naturally runs from 5-15 feet tall, already, you will always be fighting that characteristic ... nice plant pics, btw ... good luck :smokin: