Start Collars are cosidered best practice and most economical way for starting a new duct run from your supply air or return plenum. They are manufactured from the highest quality galvanized sheet metal and to our exacting standards.
Duct Installation Tips & Tricks — First, you would cut the proper size hole into your plenum plus 1/8" inch of start collar being used in your plenum or duct using sheet metal snips. Next, you would bend every other tab on the start collar out 90 degrees. Then you would insert the remaining straight tabs into the hole you just cut and then bend those tabs 90 degrees to the inside of the hole to hold the collar in place. NoSheet Metal Screws are necessary with this application method. We do recommend that you seal around the connection from the start collar to the plenum with a duct sealant to prevent air leakage. Also see installation tip for Flexible Duct or Sheet Metal Duct, depending on which type you will be attaching to.
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The product will work perfectly!