Duct Start Collar Take Off | 20" Sheet Metal Snap Together Start Collar is Compatible with 20" Duct return filter featuring a 6" round duct

featuring a 6" round duct opening

+ Product Details Size – Stick-on collar is 18" and it is compatible with duct 18"

Our Aluminum Ceiling Diffuser is not only a design marvel but also a practical choice for your HVAC system

this access door exudes a sleek and minimalistic design

Duct Start Collar Take Off | 20" Sheet Metal Snap Together Start Collar is Compatible with 20" Duct return filter featuring a 6" round duct+ Product Details Size Sheet metal duct board take off start collar is 20" and it is compatible with duct 20". Premium Quality Our products are made of high quality galvanized sheet metal with crimped ends (snap lock design) for easy fitting and secure connection. Made in the USA. Applications The snap collar duct board fitting is used as a main duct or plenum; a starting collar is installed for attaching a straight or split fitting for the ducts.