Roundhouse 1438 HO Scale 50' Mechanical Reefer Union Pacific ARMN 902011 Automobile This 500-piece Bluebird Jigsaw Puzzle

This 500-piece Bluebird Jigsaw Puzzle is from the famous Greg Giordano

(6) 5X10X4

Adjustable height

Train Size: 22

Roundhouse 1438 HO Scale 50' Mechanical Reefer Union Pacific ARMN 902011 Automobile This 500-piece Bluebird Jigsaw PuzzleRoundhouse 1438 HO Scale 50' Mechanical Reefer Union Pacific ARMN 902011 The railroads responded to the migration from ice stored in bunkers as a primary cooling system to the diesel mechanical systems. The mechanical reefers could keep a more regular temperature, often times colder then what the ice bunker cars could at the time. Initially mechanical reefers were used primarily in frozen food service. This would soon change as mechanical