The MONOLITH Junior Pro firebox retrofit kit allows you to completely replace the original firebox of your older MONOLITH Junior model. The robust metal frame, in which the supplied ceramic stones are placed, ensures optimum installation. Compared to previous concepts, the Pro firebox is divided into five separate segments, which minimizes the risk of cracking by reducing stress. You also get a newly designed ash scoop with a rounded bottom that fits perfectly into the round shaped ash catcher of the firebox to make ash removal as easy as possible.Your MONOLITH Junior Firebox Pro Set contains:- 1x robust metal frame- 5x individual ceramic segments- 1x rounded ash shovel