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+--- Thread: how do I connect round ducts together (/showthread.php?tid=33896)
how do I connect round ducts together - jodiwh60 - 01-15-2020
do I need duct tape or self drilling screwsYou have a choiceYou can slip-fit them together and space (3) self threading sheet metal screws 120 degrees apartWrap the joint with self-adhering backed, aluminum foiled tapeOr, you can fit together by using a duct connectorThis is usually used for making bends or slight curvesA sturdy joint to secure a duct hanger fromCan secure with screws also but not necessary but wrap with above tapeDuct tape is cheaper and ok but will peel off within a few years.Other related question
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