The Under Current® Pro lid was designed to fit our Under Current® Pro growth module and is made of solid white, non-translucent ABS to prevent light penetration. It features a reinforced ribbed design to stand up to the rigors of commercial growing. The dual portholes allow for easy root viewing and maintenance. Multiple site configurations allow for custom applications and easy transfer of plants from our 8 & 13 gallon Under Current® systems. Available in multiple plant spacing configurations. Manufactured in California. Included with all Under Current® Pro systems. These items are drop ship only.