08-20-2019, 06:24 AM
Shapeways has some nice ductwork for roofs etc.Evergreen #199 is the perfect extension. I will use it on my industry building roofs.
https://www.shapeways.com/product/LUBCBJ...li=ostatus
[url=https://flic.kr/p/2h2cpmm][/url]
https://www.shapeways.com/product/LUBCBJ...li=ostatus
[url=https://flic.kr/p/2h2cpmm][/url]
Reinhard