Chimney Air Block

The lightweight 16 in.

Chimney air block.

Made from concrete for strength and durability. The chimney balloon stops this heat loss by acting as a chimney stopper to insulate your fireplace and save you money heat and comfort. The spark arrestor shall be accessible for cleaning and the screen or chimney cap shall be removable to allow for cleaning of the chimney flue. It even works in chimneys that have no damper.

The center hole allows you to install chimney liner not included the block is uniform in shape color and texture. Concrete chimney block measures 16 in. Square chimney block actual size 16 3 4 x 7 5 8 x 16 3 4 model number. The damper inside the chimney just above the firebox or area where a fire is built helps keep cold air birds and animals out when the fireplace is not in use.

Openings shall not permit the passage of spheres having a diameter greater than 1 2 inch 12 7 mm nor block the passage of spheres having a diameter less than 3 8 inch 9 5 mm. A chimney balloonis used to close off the flue closed when the unit isn t operating. The chimney balloon is a inflatable blocker that prevents drafts from a chimney caused by a broken warped or missing flue damper. You ll have to remove the balloon each time you start a fire but if you use your fireplace sparingly this can be a good option.

Chimney balloon fireplace dampers air seal the fireplace to stops cold drafts bugs birds bats and chimney smells from entering your house. And accepts an 8 in. 1796514 menards sku.