Res-Cubes are a must-have for pond-free water features! Using reservoir cubes not only allows you to reduce rock tonnage, sparing you time and back-breaking labor, but it allows you to increase your reservoir capacity and reduce your reservoir size! Res-Cubes boast 90% water capacity, as compared to 40% with rock Increased capacity means smaller reservoir: less digging, less liner, less work High-Strength Res-Cubes These are great for weight-bearing features, whether a larger Just-A-Falls, a feature using large boulders, or under patios and walkways! Ships unassembled to save space and shipping cost, but is quick and easy to assemble on site. Can be used , etc. Great for retention and recycling of rain water. SKU Description Dimensions Water Capacity Wt HSC22* High-Strength Res-Cube, Small 27" x 16" x 9.5" 17 gal (2.4 cu ft) 23lb HSC44* High-Strength Res-Cube, Large 27" x 16" x 17.5" 31.5 gal (4.4 cu ft) 30lb *Sold only in pairs Manual