HVAC Duct Start Collar Take Off | 6" Sheet Metal Snap Together Start Collar is Compatible with 6" Duct Aluminum + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 24" OR 24" x 20" duct opening (measured at the opening)

+ Product Details Size – 18"w X 22"h is the size for the duct opening measurement only

Our innovative adjustable design changes the game

Every grille has a front end frame that will overlap at the wall joint

+ Product Details Size – 14" x 24" or 24" x 14" is the size for the duct opening measurement only

HVAC Duct Start Collar Take Off | 6" Sheet Metal Snap Together Start Collar is Compatible with 6" Duct Aluminum + Product Details Perfect Fit+ Product Details Size Sheet metal duct board take off start collar is 6" and it is compatible with duct 6". 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.