Imperial 4 In. 30 ga Crimped HVAC Duct Pipe Round Collar
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Description
This Imperial 4-in Crimped Round Starting Collar provides a reliable transition from a rectangular duct or a plenum to round duct or insulated flexible duct. It features a crimped end for easy installation and attaches to a flat surface with tabs that create a tight lock. Built to last, the round starting collar is made from 30-gauge galvanized steel for rust resistance and durability. It is suitable for use in most heating, venting and air conditioning applications.
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