Monessen 4" Insulated Flex Duct (ID4)

Enhance airflow and combustion efficiency with the Monessen 4" Insulated Flex Duct—an essential venting solution for vent-free fireplace installations.

Key Features:

• Designed for Outside Air Intake:
  Helps draw fresh air from outside, supporting safe and efficient combustion in vent-free systems.
  
  

• Insulated for Better Thermal Control:
  Reduces heat loss and minimizes condensation, ideal for installations in cooler climates or unconditioned spaces.
  
  

• Convenient Kit Components:
  Includes two 42" (1065mm) sections of 4" (100mm) insulated flex duct, ready for easy integration into compatible systems.

Specifications:

Support Better Performance:

This flex duct kit promotes better airflow while helping maintain room temperature comfort. Its insulated design also supports long-term durability and energy savings.

Why Choose This Kit?

• Specifically designed for Monessen vent-free models

• Easy to install with included components

• A practical solution for maintaining clean, safe combustion air

Pair with Confidence:

This duct kit is compatible with a range of Monessen vent-free fireplaces. Always consult your installation manual or contractor to ensure proper fit and use.

Compare Venting Options:

Looking for other air intake solutions? Explore compatible alternatives to suit your installation needs:

•  Monessen 4" Uninsulated Flex Duct (UD4) – A lightweight option for mild climates or interior applications.

•  Monessen Outside Air Kit with Access Door (AKD) – Combines air intake with a convenient access panel for added functionality.

We offer free order cancellations before the shipping label or Bill of Lading is generated, or prior to the commencement of production for custom orders.

Please note that custom-made items are not eligible for refunds once production has begun. 

To be eligible for a return, the item must be unused and in its original condition, with all packaging intact and in perfect condition. 

Orders delivered outside of the United States are not eligible for refunds. If your order arrives damaged, please refer to the "Damages" section.

Our refund policy extends for 30 days. If 30 days have elapsed since your purchase, regrettably, we cannot process a refund.

Prior to returning an item, please contact us to discuss shipping details.

All refunds will be credited to the original credit card or PayPal account used for the purchase, within two days of receiving the returned items at our warehouse.

• Read our full shipping policy here
• Read our returns policy here