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The AIR FLOW PRODUCTS PI145SL is a snap-lock galvanized steel pipe section used in residential and light commercial HVAC duct systems. Fabricated from 28-gauge galvanized steel, this straight pipe section measures 14 inches in diameter and 5 feet in length. The snap-lock seam construction allows for fast field assembly without additional tooling, making it a practical choice for ductwork runs where speed and reliable joint integrity are priorities. HVAC installers and sheet metal contractors use this pipe as a core component in supply and return air distribution systems.
This pipe section is suited for low-pressure forced-air duct installations in residential and light commercial buildings. It connects to standard round duct fittings, elbows, tees, and takeoffs of matching diameter. The 14-inch diameter and 5-foot length make it appropriate for main trunk extensions or large-diameter branch runs where airflow capacity requirements are significant. Licensed HVAC technicians and sheet metal workers are the typical installing trade for this size of round duct pipe.
Designed as an OEM-style round duct pipe section for use with standard 14-inch diameter galvanized round duct fittings, collars, and accessories in forced-air HVAC systems.
Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor in accordance with SMACNA duct construction standards and applicable local mechanical codes. Always de-energize and lock out the air handling system before connecting or modifying duct sections. Secure all joints with sheet metal screws and seal with code-approved duct mastic or listed duct tape to maintain system pressure integrity. Support the pipe at intervals required by local code to prevent sagging.
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