The TR4 Insert Stove can be installed into a standard solid fuel fireplace opening. Simply remove the fret and grate; slide the appliance into place and tighten the locking system to seal the stove to the fascia of the fireplace back panel. Removing the fireclay fireback is not necessary. This stove must not be installed into a chimney that serves any other heating appliance. Remember, remove the TR4 Insert Stove and clean your chimney every year.