Gallery Feb 5, 2021 Give your older flat bottom an upgrade Concrete form preparations New 3500bus.Behlen/PRP Combo Hopper Bottom bins Forming for new slabs 22'dia. Hopper Bottom for Behlen bin Pour over on an exsting slab Behlen U-pour forming system 19'dia.Westeel-Rosco on PRP Hopper Bottom We can deliver right to your farm yard 19'dia Westeel Rosco/PRP hopper Combo 2200bus.Westeel-Rosco/PRP Combo 3500bus.Behlen/PRP Hopper combo 2911 Behlen retro fitted with a PRP hopper bottom Finishing a pour over slab