The surprising Others : Spiral Ducting picture above, is a part of 7 Top Exposed ductwork blog post, and this labeled under Others category.
7 Top Exposed ductwork picture Above Labelled as: ac duct topic, as well as ac ducting topic, along with ducting supplies discussion, in conjunction with flexible duct discussion, also kitchen design subject, so don't forget to check the main article 7 Top Exposed ductwork to read the whole story.
