4" Start Collar With Crimp

This crimped start collar is used to start a round pipe run from a flat surface (main rectangular duct or plenum). This product was proudly made in the USA using galvanized steel construction for durability and rust prevention.
Features
1/4" ledge produces an excellent seal and consistent sure fit - tabs specially designed to bend in identical location to produce an exceptional tight lock to duct and plenum
Attaches to plenum using 5/8" flanges and tabs
Installation depth of collar is 2-1/8"
Galvanized steel construction for durability and rust prevention
30 gauge