The GRO Products Vertical GRO System (VGS) may have a small footprint, yet it will change the way you garden in a big way. The VGS is quick and easy to assemble-it only takes a few minutes. The VGS is constructed right here in the USA with unfinished Cedar, a naturally rot and insect resistant material. The kit includes 2 removable planter boxes that can be adjusted on the VGS to accommodate different plant heights. Included with each VG Box are removable, heavy duty plastic liners with interlocking reservoir bottom. These plastic liners provide a barrier between the soil and cedar. And here's a helpful hint: you can remove the plastic liners and conveniently plant them on your potting table. Want to move your Vertical GRO System around? Add Casters and your VGS will be MOBILE! And check out the Irrigation System too!