Hellow guys, Welcome to my website, and you are watching 90° Degrees Rectangular change Elbow Duct Part 2 #DUCTLINE4125. and this vIdeo is uploaded by DUCT LINE 4125 at 2021-11-23T15:34:39-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.