HVAC Duct Start Collar Take Off | 4" Sheet Metal Snap Together Start Collar is Compatible with 4" Duct 4" Round Duct Pipe Design – Removable face for

Design – Removable face for cleaning and access to damper - wooden damper for airflow shutoff control

actual front end outer dimensions are 9" width X 9" height

+ Product Details Size - 36"w X 4"h is the size for the duct opening measurement only

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+ Product Details Size – 14"w X 8"h is the size for the duct opening measurement only

HVAC Duct Start Collar Take Off | 4" Sheet Metal Snap Together Start Collar is Compatible with 4" Duct 4" Round Duct Pipe Design – Removable face for+ Product Details Size Sheet metal duct board take off start collar is 4" and it is compatible with duct 4". 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.