Vogelzang Wood Stove Z-Size Pumice Firebrick (3" x 2-1/4" x 1-1-4"): 1B-11Z. Fits: TR001B and TR002B Wood Stoves. Firebricks help insulate the interior of the firebox from direct contact with the flame while also helping to hold heat inside the unit. If you notice large cracks in the firebrick or bricks that are starting tocrumble or are deteriorated, they should be replaced!

Note: Sold individually.