Duct Start Collar Take Off | 9" Sheet Metal Snap Together Start Collar is Compatible with 9" Duct Compatible with Duct 4" + Product Details Size –

+ Product Details Size – 12" X 2" is the opening (vent hole) dimension - actual size is approx

Efficient Organization With 29 pockets

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 12" OR 12" x 20" duct opening (measured at the opening)

+ Product Details Size – 8" x 24" or 24" x 8" is the size for the duct opening measurement only

Duct Start Collar Take Off | 9" Sheet Metal Snap Together Start Collar is Compatible with 9" Duct Compatible with Duct 4" + Product Details Size –+ Product Details Size Sheet metal duct board take off start collar is 9" and it is compatible with duct 9". 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.