Unilock Backer Block, 6" X 8" X 6" Gray Standard Sure Track Enduracolor | 175BSTB111121-0

Key Features

• Capacity - gravity walls upto 39 in. (1 m), geogrid reinforced walls upto 10 ft. (3 m)
• Recommended base stabilization - one layer of DriveGrid™ stabilization grid between subgrade and base material
• Standard base - minimum 6 in. - 8 in. of 3/4 in. crusher run gravel (any road base standard in accordance with ASTM-D2940) compacted to 98% standard proctor density (SPD)
• Alternative permeable base - minimum 6 to 8 in. of 3/4 in. clear open-graded stone compacted to achieve full particle lock-up and consolidation
• Levelling - U-cara must be constructed on U-Grip™ base units or universal base pads
• Connection - features a tongue and groove connection, use appropriate concrete adhesive for connection between standard backer units or where the key has been removed for corners
• Handling - handle faces with care to avoid chipping edges
• Use the Standard unit to build low walls and vertical elements such as seat walls, grill islands, fire tables, and water features
• Packaging: 105 Unit/Bundle, 3 Layer/Bundle, 0.323 Face Feet/Unit, 33.91 Face Feet/Bundle