Dura-Hold II is similar to Dura-Hold in appearance, but is just over half the size, making it economical in terms of material cost, speed and efficiency for lower retaining walls. Its large scale (standard size weighs 940lbs) is disguised by false joints which cast bold shadows to give the appearance of several individual blocks in each unit. Build gravity walls up to 4ft (1.2m) or grid reinforced walls up to 25ft (7.6m) high with proper engineering under typical conditions. Concrete tie-backs or geogrid give this wall various engineering options. Coping units are also available.