A: This unit is free standing.
A: No actually it is 32" in width, 45" in height and 9" in depth. The perfect vertical garden for herbs!!
A: Hello Beth, The units are not designed to be joined in a way as you describe. The primary issue will be the port for watering each subsequent planter will be blocked. If you can engineer around this I would say maybe three units linked at a time. This is because the addition of soil will start to make things very heavy. Make sure that the planters are secured to wall studs to help manage the weight. I hope this helps. Cheers, Chris
A: This is made from cedar, a naturally rot resistant wood.