IPA Car Carriers STVA Red Twin set - Flat with StakesOO gauge 4mm scale model of the VTG Ecofret FWA twin and triple container sets in use with DB Cargo, Freightliner and GBRf. VTG developed the new and innovative FWA Ecofret in twin and triple format as wagons which are shorter than traditional container flats, meaning that in a market dominated by 40 containers they can carry a greater load per train length. The Ecofrets were introduced from 2011 and can be seen in DB red (triple set), VTG green used