HO Scale MECHANICAL DUCTWORK, Industry Variety Pack

"Make dozens of different configurations...modular design pack"

MECHANICAL DUCTWORK ...Industry Modular system
Create Numerous rooftop or building wall mechanical ducting
designs a great detail addition to any industry structure
Run them along the rooftop.....down a wall.....connect floor to floor
in your building's on the exterior for "REAL LIFE" detailing....makes
your building's alot more interesting !!