These heavy duty Waney Lap panels range from 2ft high up to 6ft high. They can be slotted into existing concrete posts. like all our panels they are pressure treated for long life. Our standard panel is for 1ft trellis. So 3ft high panel would have 2ft solid and 1ft trellis. We can make any combination of solid vs trellis just let us know in the information box at checkout.