Duct Start Collar Take Off | 20" Sheet Metal Snap Together Start Collar is Compatible with 20" Duct Filters this collar is ideal for

this collar is ideal for starting runs of flexible or rigid HVAC ducting

This 24" X 10" end cap is constructed with 26-gauge galvanized steel

+ Product Details Size & Compatibilty - The 8" to 4" round metal pipe reducer & increaser 30 gauge is compatible with duct 8" to 4"

The Exiva Duct Collar not only simplifies the installation process but also enhances performance by preventing high-pressure loss and minimizing dust accumulation

Duct Start Collar Take Off | 20" Sheet Metal Snap Together Start Collar is Compatible with 20" Duct Filters this collar is ideal for+ 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.