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The ROYAL BUILDING PRODUCTS 35-1607 is a 6-inch single duct gasketed street 22.5-degree elbow designed for use in low-pressure duct systems. This fitting provides a smooth directional change in round duct runs, maintaining airflow efficiency through a shallow angle bend. The gasketed design creates a tighter seal at the joint connection, reducing air leakage compared to non-gasketed fittings. It is installed by HVAC technicians during duct fabrication and system assembly in both new construction and retrofit applications.
This elbow is suited for residential and light commercial HVAC installations where a 22.5-degree offset is required in a round single duct run. The street configuration allows direct insertion into a fitting or duct section without a separate coupling, simplifying assembly. It is appropriate for supply and return air duct systems operating within standard low-pressure parameters.
Designed as an OEM-style replacement or new-installation fitting for 6-inch round single duct systems in residential and light commercial HVAC applications.
Installation should be performed by a licensed HVAC technician following applicable mechanical codes. Power down the air handling unit and confirm the system is de-energized before working on duct runs. Secure all joints with approved duct sealant or tape per local mechanical code requirements in addition to the gasketed connection. Avoid over-forcing the street end into adjoining duct sections, as this can distort the gasket and compromise the seal.
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