Collar is included. Collar attaches to boot straps and to flex in minutes.
Ask for The Metal Shop Brand Fiberglass Products.
This is a game changer! Never build a box again!
Virtually Seamless AHU Installation with The Metals Shop Return Air Stands; Coupled With The Filter Housing
Fast. Easy. Simple. Smart.
A Combination that make AHU installations go more quickly with less work.
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