Speedi-Collar SC-08 8-Inch Diameter Take Off Start Collar without Damper for Hvac Duct Work Connections by Speedi-Collar at N Online Agency. MPN: SC-08. Hurry! Limited time offer. Offer valid only while supplies last. Speedi-Collar is the innovative energy efficient and time saving Start Collar alternative you've been waiting for. This revolutionary start-collar features an adhesive gasket that attaches to duct board or metal trunk lines. The patented Quick-Zips tighten to create a virtually air tight seal. Therefore there are no added sealants that are required unlike a standard start-collar. The patented Quick-Zip mounting reduces installation time from 10 mins plus down to a minute or less. And if you
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