MIFAB® MPFR-DW Series fire rated access door is approved by Underwriters Laboratories Inc., for 1 ½ hours, “B” label in walls and is approved by Warnock Hersey for 2 hours in ceilings and 3 hours in walls. It meets ANSI-UL 10B standards. The same door can be used in walls and ceilings. Tests were conducted using mild steel and type 304 stainless steel. The MPFR-DW incorporates a drywall bead type of frame for a concealed frame application.