6633-6151 Coleman-Mach DUCT COLLAR 6IN (PKGD)

The 6633‑6151 Coleman‑Mach 6" Duct Collar is an OEM‑packaged round duct connector designed for use with Coleman‑Mach rooftop A/C systems and compatible ducted installations. This collar provides a secure, airtight transition point between the A/C plenum and 6‑inch flexible ducting, ensuring proper airflow and system efficiency. Built from durable materials and sized to factory specifications, it’s ideal for new installs, retrofits, and replacement of damaged or missing duct collars.