This Imperial Crimped Round Starting Collar provides a reliable transition from a rectangular duct or a plenum to round pipe 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.
Used to transition from a rectangular duct or a plenum to round pipe or insulated flexible duct
Crimped for easy installation
Tabbed at one end for a tight seal
Constructed from 30-gauge galvanized steel for durability and rust resistance
Suitable for most HVAC applications
Size: 4-in diameter
