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The SEAL-TITE RDP-052620 is a tapered snap lock round duct pipe section used in sheet metal ductwork systems for commercial and residential HVAC air distribution. Fabricated in 26 gauge steel, this pipe measures 20 inches in diameter and 60 inches in length per section. The snap lock seam design allows sections to connect without additional fasteners at the longitudinal seam, speeding up field assembly. The tapered end allows consecutive sections to nest and slip-fit together, maintaining a secure mechanical connection along straight duct runs. Sheet metal workers and HVAC installers use this pipe in supply and return air trunk systems.
This round duct pipe section is suited for low-pressure supply and return air distribution in residential and light commercial HVAC installations. The 20-inch diameter accommodates larger trunk line applications where high-volume airflow is required. The 60-inch section length reduces the number of joints in a run, which limits potential air leakage points. It is field-cut with standard sheet metal tools and can be mated with standard round fittings of matching diameter.
Designed as an OEM-style replacement and new-construction round duct pipe for standard snap lock round duct systems using 20-inch diameter fittings, collars, and elbows.
Installation is performed by licensed sheet metal workers or HVAC technicians in accordance with SMACNA duct construction standards and applicable mechanical codes. Power down the air handling unit before making connections to an active duct system. Seal all longitudinal seams and slip-fit joints with UL 181-listed mastic or foil tape as required by local mechanical codes. Avoid over-inserting tapered sections, which can distort the seam lock and reduce joint integrity.
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