Ashley Wood (Stove/Furnace) Clay Firebrick (4-1/2" x 9"): 89066

Ashley Wood (Furnace/Stove) Clay Firebrick (4-1/2" x 9"): 89066. Firebricks protect the firebox from direct contact with flames and help retain heat inside the unit. If the firebricks in your stove are damaged, they should be replaced.