HVAC Duct Start Collar Take Off | 8" Sheet Metal Snap Together Start Collar is Compatible with 8" Duct Oval Stack Head + Product Details Size &

+ Product Details Size & Compatibility – The size of the side round ceiling box is 8" X 8" X 8" and it is compatible with duct 8"

Actual dimensions: 15

+ Product Details Size – 28"w X 28"h is the size for the duct opening measurement only

This 12" X 12" end cap is constructed with 26-gauge galvanized steel

HVAC Duct Start Collar Take Off | 8" Sheet Metal Snap Together Start Collar is Compatible with 8" Duct Oval Stack Head + Product Details Size &+ Product Details Size Sheet metal duct board take off start collar is 8" and it is compatible with duct 8". 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.