Palusol SW sandwich panels meet fire door listings requirements issued by the Quality Auditing Institute. The listings include the door cores, edge-sealing systems and hardware, and confirm 20 to 90 min. fire resistance for wooden fire door slabs and frames. The panels provide a combination of fire and smoke protection with insulation against heat, a low response temperature at 212 F and short response time to heat, and thin door construction at 1 3/4 in. A variety of aesthetic designs is possible by varying the visible surface. A glazing surface range from 83 to 2,656 sq. in. includes a clip system that simplifies the insertion of glazing.