050715 Suburban Furnace DUCT COLLAR 4”

OEM hot‑air outlet collar for Suburban RV furnaces

The Suburban 050715 duct collar is a 4‑inch round hot‑air discharge collar used to attach ducting to Suburban RV furnaces. Many Suburban models ship with multiple potential duct ports, and this collar provides the proper mounting interface for a secure, leak‑free connection. A damaged or missing collar can cause heat loss, reduced airflow, and improper static pressure, leading to poor furnace performance.

This collar is sized for standard 4" RV furnace ducting and installs directly onto the furnace’s outlet port using the factory mounting holes.

What this duct collar does

• Provides a secure 4" connection point for furnace ducting

• Maintains proper airflow and static pressure

• Prevents heat loss into the furnace compartment

• Ensures correct distribution of heated air to registers

• Supports both flexible and rigid RV ducting

Typical use cases

• Adding an additional duct run to a multi‑port furnace

• Replacing a damaged, bent, or missing duct collar

• Restoring airflow balance after remodels or service

• Ensuring proper fitment when upgrading ducting