Mullite Cordierite Ceramic extrude batts:
Plain Batts are the most common type of primary kiln furniture, usually produced by semi-dry pressing, but can also be made by pressure-casting. Extruded batts can be split into ten sub-categories as follows: Extra Large Batt, Extra Thin Batt, Plain Batt, Perforated Batt, Grooved Batt,Trapezoid Batt, Recessed Batt, Full Disc, Half Disc and Special Batt.