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The LAMBRO INDUSTRIES 243 is a 3-inch metal connector designed to join two sections of flexible aluminum duct. It provides a secure, rigid connection point between duct segments, maintaining airflow continuity in ventilation and exhaust runs. Licensed HVAC technicians and sheet metal installers use this fitting during new installation and repair work on residential and light commercial duct systems. The connector ships individually and is sold in package quantities of six units, making it practical for multi-unit service calls or larger installations that require several connections along a single duct run.
This connector is suited for residential HVAC ventilation, dryer exhaust, bathroom exhaust fan, and range hood duct runs where 3-inch flexible aluminum duct is specified. It fits inline between two duct sections and is commonly used wherever a duct run requires an extension or a repair splice. The metal construction holds its shape under the compression and banding forces applied during standard duct installation.
Designed as an OEM-style fitting for use with 3-inch flexible aluminum duct sections in residential ventilation and exhaust duct systems.
Installation is typically performed by a licensed HVAC technician or qualified installer. Power down or disconnect the appliance tied to the duct run before beginning work. Slide each duct end over the connector and secure with approved metal duct tape or clamps per local mechanical code requirements. Do not use general-purpose adhesive tape in place of listed duct tape or clamps.
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