Fire doors are generally fire resistant sealed frame doors made of various materials and installed in fire rated walls.
Residential fire rated door requirements.
If the door is not solid wood or steel honeycomb and at least 1 3 8 thick then it must have a 20 minute fire rating.
Door to house this is the only place where any fire rating is specified.
Fire door designs complement simpson interior door designs for architectural.
To meet fire separation requirements the door must be one of three types of doors.
2 hour 1 1 2 hour 90 minute.
The international residential code table is similar.
Fire door requirements are set by the national fire protection association and these requirements have been incorporated into most local building codes in the united states with little to no modification.
By the way cutting a hole in the door to install a pet door flap voids the 20 minute rating.
Basic fire door fire door frame transom sidelight frame and window frame requirements table 1 fire door openings opening wall rating door and frame rating description and use 4 hour 3 hour 180 minutes these openings are in walls that separate buildings or divide a single building into designated fire areas.
And best of all simpson 20 minute fire rated doors match up perfectly with virtually any simpson interior panel door regardless of design or species.