Insulated Return Air Box FG/VG C Width 21-1/4×28-1/4×18 Furnace

Insulated Return Air Box – Fits FG/VG Series Furnaces (C Width)

This insulated return air box is designed to fit FG/VG series furnaces (C width configuration). Constructed from galvanized steel and factory insulated, it provides a secure and efficient return air plenum connection beneath the furnace.

Specifications:

• Compatible With: FG/VG Series Furnaces (C Width)

• Dimensions: 21-1/4″ W x 28-1/4″ D x 18″ H

• Material: Galvanized Steel

• Internal Insulation: Factory Installed

• Application: Return Air Plenum Box

Key Features:

• Pre-insulated for improved efficiency

• Reduces heat loss and condensation

• Durable galvanized construction

• Designed for residential furnace installations

• Ideal for new installs or furnace replacements

Provides a clean, professional return air connection while helping maintain airflow efficiency and system performance.

Commonly used by HVAC contractors during furnace replacements and new construction installations.

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Product details

Part / SKU	2125282518FGRI8

Package includes

• Insulated Return Air Box FG/VG C Width 21-1/4×28-1/4×18 Furnace

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.