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COLLAR 9″ – C-9 Galvanized Duct Start Collar with Flange for Round HVAC Ductwork
$2.34
The C-9 Start Collar 9″ offers a secure, flanged connection from plenums to 9-inch round ductwork. Built from galvanized steel for durability and tight airflow control.
410 in stock
The COLLAR 9″ (C-9) is a durable galvanized steel start collar designed to create a secure connection between a main duct or plenum and a 9-inch round duct run. It features an integrated mounting flange, ensuring a tight, stable fit in ductboard or sheet metal plenum installations.
Engineered for both residential and commercial HVAC systems, the C-9 collar provides a clean airflow transition point while minimizing leakage and improving energy efficiency. Its pre-formed round shape ensures quick installation, while the flanged edge offers multiple fastening options including screws or rivets.
Use this collar when installing flex duct, round metal pipe, or for creating new branches off trunk lines. The 9-inch diameter makes it ideal for medium airflow zones such as living areas, large bedrooms, or open office spaces.
Additional information
| Weight | 0.9 lbs |
|---|---|
| Dimensions | 10 × 10 × 3 in |
| Product Type | Start Collar |
| Model | C-9 |
| Diameter | 9 inches (round) |
| Material | Galvanized Steel |
| Flange Type | Flat flange with fastener holes |
| Application | Ductboard or sheet metal plenum to round duct |
| Installation | Screw-on, rivet or adhesive |
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