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The AIR FLOW PRODUCTS PI04SL26GA is a snap-lock galvanized steel pipe section designed for residential and light commercial HVAC duct systems. Manufactured from 26-gauge galvanized steel, this round pipe measures 4 inches in diameter and 5 feet in length. The snap-lock seam construction allows field assembly without additional tools or fasteners, making it a practical choice for duct fabrication and replacement work. HVAC installers and sheet metal contractors use this pipe for supply and return trunk extensions, branch runs, and new construction ductwork layouts.
This pipe section is suited for forced-air heating and cooling systems where round galvanized duct is specified. The 4-inch diameter is a common size for branch runs serving individual registers or diffusers in residential applications. The 5-foot length reduces the number of joints required in a straight run, supporting cleaner, lower-leakage installations. It is appropriate for both new construction and retrofit projects where existing duct sections need to be extended or replaced.
Designed as an OEM-style component for use in standard round galvanized ductwork systems compatible with 4-inch snap-lock fittings, elbows, collars, and transitions.
Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor following local mechanical codes and SMACNA duct construction standards. Power down the air handler or furnace before working on any connected duct section. Secure all joints with sheet metal screws and seal with UL 181-listed duct tape or mastic to minimize air leakage. Avoid compressing or deforming the pipe during handling, as gauge metal can crease and affect airflow performance.
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