True North 4" Outside Air Adapter

Improve your wood stove’s performance and efficiency with the True North 4" Outside Air Adapter, designed specifically for the TN20 and TN25c models. This essential stove accessory delivers a direct supply of fresh outside air to your combustion chamber, helping your stove burn cleaner, hotter, and more efficiently especially in modern, airtight homes.

Built for reliable performance, this outside air kit reduces indoor air competition caused by HVAC systems, range hoods, and bathroom fans. By providing a dedicated combustion air intake, it enhances draft stability, improves fuel efficiency, and supports more complete combustion for reduced emissions and better heat output.

Ideal for EPA-certified wood stoves, this adapter is a must-have upgrade for homeowners seeking energy-efficient heating and optimal stove operation.

Features

• Perfect Compatibility – Designed for True North TN20 and TN25c wood stoves
• 4" Outside Air Connection – Ensures consistent and controlled combustion air supply
• Improved Stove Efficiency – Supports cleaner, more complete wood burning
• Better Draft Performance – Reduces backdrafting and unstable combustion
• Ideal for Airtight Homes – Prevents indoor air pressure issues caused by sealed construction
• Energy Efficient Heating Solution – Helps maximize heat output while reducing fuel consumption
• Low Emissions Operation – Promotes cleaner burn and improved environmental performance
• Durable Construction – Built for long-lasting performance in high-heat environments