Fire-Rated Mineral Core Wood Doors

Starting at  $850
Nationwide Delivery

Reserved for elevated fire-rating requirements, mineral core doors are composed of non-combustible materials that can be fire-rated for up to 90 minutes. Doors with mineral cores are typically specified where building codes require fire-rated constructions.

  • 1-3/4″ thickness only
  • Stain grade and prefinished veneers
  • Fire-resistant mineral core: rated up to 90-minutes

Product Overview

Mineral core fire-rated wood doors for commercial and institutional applications

Architectural grade wood fire doors control the spread of fire and smoke for up to 1-1/2 hours (90 minutes). Fire doors are often used on openings leading from corridors to offices, closets, storage rooms, stairwells, mechanical rooms, or any other opening that penetrates a fire barrier wall.

Flush mineral core construction is a bonded and sanded gypsum core. Fire doors are required to be self-closing and positive latching. The door frame and hardware must also carry the appropriate fire label. Metal Doors must be used for 3 Hour Fire-Rating.


  • Available with a range of hardware preps and glass lites (limited sizes)
  • 45, 60, or 90-minute fire-rating with WHI / ITS metal label applied (see standard door pages for 20-minute options)
  • Fire-rated metal door frames available


5 Ply Construction - Meets or exceeds industry standards of WDMA I.S.1;


Fire resistant composite core, gypsum mineral. Contains no added Urea-formaldehyde.




Up to 4'0" Widths, 8'0" Heights

Horizontal Edges

Top and bottom rails - wood or composite material. Bonded to core.

Vertical Edges

Matching vertical edges - wood or composite material. Bonded to core.


Select species raw & prefinished, minimum 1/50″ thick and primed hardboard


Doors constructed using Type I adhesives which contain no added urea-formaldehyde


45, 60, or 90 minute label (Warnock Hersey-WHI)

Temp Rise

30 minutes, 250 degrees maximum


To specification

Vision Lites

Limited sizes w/ approved fire-rated glass

Mfg. Hinge/Lock Locations

Steelcraft, Timely, Western Integrated, Redi-Frame, Mesker, Ceco, Curries, Republic, Baron, Pioneer, Deansteel, Custom Locations

Buy American Act Compliance

Meets Buy American Act – Made in USA

stain-grade-rotary-white-birchStain Grade Rotary White Birch

stain grade plain sliced red oak commercial doorStain Grade Plain Sliced Red Oak

stain grade plain sliced white maple commercial doorStain Grade Plain Sliced White Maple

stain grade rotary natural birch commercial door*Stain Grade Rotary Natural Birch


Primed White Hardboard (Paint Grade)

clear prefinished red oak commercial wood doorClear Prefinished Plain Sliced Red Oak

Clear Prefinished Plain Sliced White Maple

Wood is a natural material with inherent growth patterns. The uniqueness offered by wood makes it appealing and interesting in the realm of design and beauty. This same uniqueness, along with variations caused by screen color and resolution, is why actual colors and door face veneers may vary from what is pictured here.

*Rotary Natural Birch veneer displays fine wood texture and a very irregular grain pattern that is accentuated by the presence of light-colored sapwood permeated by much darker heartwood. The extreme difference in coloration may be highlighted or subdued when the door face veneer is finished and should, therefore, be considered before specifying Natural Birch. Machined wood doors are non-returnable.

Five Basic Requirements for a Fire Rated Opening fire-door-requirements