ClassicFlame BBKIT-28 28" Flush-Mount Trim Kit for use with In-Wall Electric Fireplace Insert Allows you to install an electric fireplace insert into a finished wall surface Provides proper airflow to the air intake vent of all ClassicFlame in-wall electric fireplaces inserts Quick and Easy, 5-step installation process. Owners manual and Easy-to-follow instructions included. For use with all ClassicFlame 28" inserts Allows for Easy removal if the fireplace should need adjustment or repair