Karp 24" x 24" KRP-150FR Insulated Fire Rated Access Door for Walls & Ceilings (Stainless Steel)

The KRP-150FR is flush mounted and has mounting holes to facilitate installation. The KRP-150FR is insulated and rated by Underwriters Laboratories for 1.5 hour "B" label in walls and by Warnock Hersey for 3 hours in ceilings. Frame is 16 gage steel, door is 20 gage steel, welded pan type. Flange is 16 gage steel and 1" wide.