Round duct branch take-offs connect branch ducts to main trunk ducts using various fittings such as ninety-degree straight tees, ninety-degree conical tees, ninety-degree elongated tees, forty-five-degree ky tees, and two-way forty-five-degree ky tees. Each configuration indicates the direction of air flow from the trunk duct into the branch duct. The details provide standard mechanical layout options for routing round ductwork systems.
DUCT TRUNK DUCT TRUNK DUCT TRUNK DUCT TRUNK DIRECTION OF AIR FLOW DIRECTION OF AIR FLOW TRUNK DUCT BRANCH DUCT BRANCH DUCT BRANCH DUCT BRANCH DUCT BRANCH DUCT 90^ CONICAL TEE 90^ STRAIGHT TEE 90^ ELONGATED TEE 2-WAY 45^ KY 45^ KY TEE DIRECTION OF AIR FLOW DIRECTION OF AIR FLOW DIRECTION OF AIR FLOW NO SCALE 2 ROUND DUCT BRANCH TAKE- OFF
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