The No Holes Bar is a simple but very sturdy grow light stand that is designed for indoor flower/plant gardening that also works well in green houses. With this product any simple hydroponics systems are transformed into commercial hydroponics systems with only one rack and a 2×4 cut to length. Works well with any type of hydroponics plant systems you desire or already have. It will leave the entire space open for your complete hydroponics systems.No Holes Bar