ALLY WALL retaining is an excellent way to retain soil up to 300mm - 600mm high. With a sleek attractive finish they are constructed from aluminium and powder coated to specified colour. ALLY WALL is a cost effective way to close the gaps under your fence. This improves privacy and stop pets getting into the neighbours property. Over 300mm high ALLY WALL is engineered up to 600mm high. This is achieved by using a powdercoated 76x38mm post between the colourbond posts.