17" x 17" Lock Top HVAC Damper - DLT1717 | Heavy Duty Airflow Control for Commercial & Residential Duct Systems | Perfect for Zoning, Ventilation & Temperature Regulation

17" X 17" Lock-Top Damper - DLT1717

This Lock-Top damper seals tight to keep heat in house when the fireplace is not burning. The Lock-Top design seals with a silicone rubber gasket. Protects your home against heat/air-conditioning loss up the chimney, and prevents downdrafts, rain leaks, and insects. A cable drops down the flue and attaches to a control handle mounted in the fire box.

WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to .