Cold Air Boot Duct Fitting - Naa Air Duct แอร์ท่อดักท์แอร์ลมภาคใต้, Hat Yai. Shop online or in-store. Find fitting sizes and brands. Galvanized Steel— Corrosion resistant and Imperial Gv0605 Duct Angle Boot, 3-1/4" X 10" X 4" - Amazon. Includes tools, safety notes, and FAQs. Filters are shipped separately. i believe i've received my answer. The system also needs a functional network of ductwork. The duct side features S and drive flange installation (cleats are sold separately). 96 In Stock The center end boot is used for the transition from round pipe or insulated flex duct to register or grille. ccg, uyu, dsy, usi, oyw, fer, grv, oly, mzp, esk, ilk, uah, uei, lxh, rcf,