The Andela Metering Surge Hopper comes in several sizes to suit your needs, from 2 cubic yards and up. Most of our customers find that our Model AMSH-86 fits their system well. The AMSH-86 is a 4 cubic yard hopper, and can have optional flare sides added for more capacity and to accommodate larger loader buckets. The Andela Metering Surge Hoppers come with either a reciprocating plate feeder or a vibratory plate feeder. Comes with 12″ or 18″ wide discharge openings.