Lots of people possess fireplaces, although not everybody includes a fireplace damper. Actually people who perform possess dampers is probably not conscious of the reason as well as advantages of getting 1.
Unless the chimney you are dealing with is a very odd size like you have never dealt with before, you should be able to use some of the standard sized and most common single flue chimney caps and multi flue chimney caps.
Energy Top Fireplace Dampers are made for use only with open burning masonry fireplace chimneys and are NOT suitable for use with fireplaces burning gas logs, or where wood stoves have been installed.
Once you'll find it cold weather, that fire pit can be being listened to consistently. Though you should definitely being listened to it ought to be closed through temperatures strips so that they can air-seal that damper.
