Round:3 metres to 10 metres diameter.15.3 cu.m to 2000 cu.m.45 or 60 degree hopper.600gm/m2 galvanized wall sheets.Full range of catwalks and ladders available.Suitable for indoor or outdoor use.Square:1 metre x 1 metre to 3.5 metres x 3.5 metres.45 or 60 degree screw discharge hoppers available.13 cu.m to 72 cu.m capacities.Smooth wall galvanized construction.Suitable for indoor or outdoor use.Rectangular:1.25 metres x 2.5 metres, 1.5 metres x 2.0 metres, 2 metres x 3 metres and 3 metres x 4 metres.Capacities from 2.1m³ to 138m³.Free Planning and Product Advisory Service available.