The Lennox X4218 zone damper is a genuine OEM airflow control component designed for Lennox HVAC zoning systems. This rectangular, side-mount zone damper measures 12 inches wide by 8 inches high and is engineered to regulate and direct airflow to individual zones, helping maintain balanced temperatures and improved comfort throughout the building.

Manufactured by Lennox, model 6723L is built for reliable operation and long service life in residential and light commercial applications. Its durable construction ensures smooth damper movement and proper sealing when opening or closing zones, supporting efficient system performance and reduced energy waste.

The Lennox X4218 is designed for direct replacement in compatible Lennox zoning applications, ensuring correct fit and dependable operation without modification. Ideal for system repairs or upgrades, this zone damper helps restore proper airflow control and maintain optimal HVAC efficiency.