*Volume Discounts Available* US Patent Number: 8,113,220 B2: The Original Concrete Washout Bag, and the Concrete Pump Washout Bag Preferred by Professionals. EnviroSac Pump Bags utilize a more effective and adaptable design that helps simplify the concrete washout system.
40% stronger than the other brands, these waterproof Pump Bags fit all hoppers and feature a rugged design, which makes the bag the most reliable and durable on the market. The bags are great for leftover concrete in the hopper and come in a range of sizes from .8 yard to 1.3 yards (1 cubic meter). The bags are convenient; they store easily in the cab of the truck allowing you to be ready for an emergency cleanout. They could also be used for general construction disposal.