Stanbroil Smoke Guard for 28.5 to 48-Inch by 4-Inch Fireplaces, Black Powder-Coated Finish

Helps keep in or channel smoke properly but also prevents carbon monoxide backup. | Enjoy the warm and smokeless fireplace during the winter, and leave away the smoke alarms. | The versatile black color comprehensively matches any furnishing style, suitable for interior decoration. | Spring-loaded Smoke Guards are installed easily. Sealed with heat-resistant adhesive caulk and without tools. | Adding to the fireplace reduces the surface area of your firebox opening, mitigating just how much air is flowing into the fireplace. Less air relieves the pressure on the entire system, allowing the flue to draft properly.