Wheelbarrow Volume Increaser™ PHOTO PAGE The Wheelbarrow Volume Increaser™ attaches to a 4, 5, or 6 cu.ft. wheelbarrow, 24 1/2 inches to 28 1/2 inches wide. Gates opened for easy loading. Full tilt for easy dumping. 25 foot-row of string beans. 25 foot-row of string beans loaded in the wheelbarrow. Without the WVI they would be spilling over the sides. The load is compressed. You could probably get 150 to 200 foot-row loaded when the gates are closed and the load is compressed. After some tree pruning around the house. Saved a lot of time hauling the branches away.