Hoppers Feeders HOPPERS/FEEDERS Our soil and mix hoppers and feeders are available in 2 to 10 yard sizes. Our mobile box filler is a large hopper and container filler that can be transported to the field for high volume filling of large containers. The hoppers come with a variety of options that include agitators, baffles for sand, low level indicators. The soil hoppers have continuous flow feeders from the hopper that can transport the media to various other machines in a continuous flow operation. It is excellent because the soil feeder allows you to bulk load and therefore operate your potting and flat filling operations for extended periods without re-loading. Excel Hoppers (2, 4, 6 or 10 yard) 2.6 yard Feeder/Hoppers 4 yard Feeder/Hopper 10 yard Feeder/Hopper Hopper – Custom Sized Leasing option available.