OO HO Gauge large Grain Silo Model Railway 3D Printed Kit 3D printed OO HO large model railway grain silo. Dimensions are 215mm high and 60mm square. (Not including ladders) 3D printed in grey PLA plastic (shades may vary ) ready for you to assemble and paint. Please note kit will come partially assembled, including spare parts so as you can easily paint and construct yourself. Other scales can be made on request. Please see my other listings for more model railway accessories.