The O scale footprint for Duncan's is 3 5/8 wide

Here is a Bachmann 60804 HO Scale Great Northern GP30 Diesel Locomotive w/DCC #3009

Trainz Product Id: 12143544

the doghouse

Rapido Trains 80049 HO Via Rail EMD F40PH-2D Diesel Loco Standard DC #6432 DwDetails-3.80-1.43-14.00-10.00-6.00-1 The O scale footprint forThis is a Rapido Trains 80049 HO Scale Via Rail EMD F40PH 2D Diesel Locomotive Standard DC #6432. (different road number shown) Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Rapido Trains Model Number: 80049 Road Name: Via Rail Canada (VIA) MSRP: $209. 95 Scale Era: HO Scale Model Type: Diesel Loco The Trainz SKU for this item is P12320471. Trainz Product Id: 12320471