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The SNAPPY 422-046nc is a 4-inch, 26-gauge galvanized sheet metal tee fitting designed for use in residential and light commercial HVAC duct systems. This full-flow, uncrimped tee maintains consistent airflow through the branch connection without the restriction that crimped ends can introduce. The galvanized steel construction resists corrosion in typical indoor air distribution environments. HVAC installers and sheet metal contractors use this fitting when splitting a single duct run into two branches during new construction or renovation work. At 0.80 pounds, it is lightweight enough for single-technician handling during overhead or wall installation.
This tee fitting is suited for 4-inch round galvanized ductwork in forced-air heating and cooling systems. The uncrimped end configuration allows the installer to choose the connection method on site, whether that means field-crimping one end to slip into an adjacent fitting or using drive cleats and screws for a rigid assembly. It is a common component in residential trunk-and-branch duct layouts and smaller commercial air distribution runs where 4-inch branch takeoffs are required.
Designed as an OEM-style replacement and new-installation fitting for 4-inch round galvanized sheet metal duct systems in residential and light commercial forced-air HVAC applications.
Installation should be performed by a qualified HVAC technician or sheet metal contractor in accordance with SMACNA duct construction standards and applicable local mechanical codes. Power down and lock out the air handling unit before making any duct connections in an active system. Secure all joints with sheet metal screws and seal with listed duct mastic or metal-backed tape per code requirements. Do not over-drive screws through 26-gauge material, as this can distort the fitting and compromise the seal.
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