Hopper Bottoms: -All bottoms are designed for 5-ring wide corr. bin maximum. -Hoppers installed under non-Lambton bins may require stiffeners and will not be warranted. -Also standard flat bottom bin foundations should not be used under hopper bins. Hopper Bin Includes: -Bolt together 45hopper -Hopper bin -Bin roof -Manhole roof sheet Misc. Information -Ladders are optional -4'' corrugated wall sheet with 44'' coverage -Must be Filled through center roof opening and emptied from center of hopper -Designed for free flowing mate