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Flush Steel 20-Minute Fire Rated Prehung Door – Primed

Price range: $545.00 through $595.00

15 in stock (can be backordered)

A heavy-duty, modern flush steel 20-minute fire-rated prehung door built for clean aesthetics and essential fire separation. Designed primarily for residential garage-to-house entryways, utility rooms, and furnace spaces, this complete setup comes prehung on a wooden frame with an integrated bottom sill, two self-closing spring hinges, and one standard hinge. Available with standard or fully labelled fire-rated jamb options to satisfy local building code requirements.

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SKU:Steel-FR-PH-1 Categories:Fire Rated Interior Doors, Steel Fire Rated Doors

Streamlined Safety & Building Code Compliance

The Flush Steel 20-Minute Fire Door offers a sleek, minimalist profile without sacrificing thermal or fire protection. Engineered specifically to satisfy Ontario Building Code (OBC) standards for fire separation between an attached garage and living area, this prehung steel unit provides a complete seal against smoke, drafts, and heat transfer.

Technical Specifications & Included Hardware

Fire Resistance: 20-Minute certified fire-rated steel slab
Complete Prehung System: Factory prehung on a solid wood frame with an integrated bottom sill for straightforward alignment
Self-Closing Hardware: Pre-equipped with 2 spring-loaded self-closing hinges and 1 standard hinge to ensure an automatic seal
Finish: Primed smooth white finish, ready for field painting to match interior trim
Jamb Configurations: Choose between standard wooden jambs or certified fire-rated labelled jamb options
Standard Widths: 30″, 32″, 34″, and 36″ (80″ height)

Ideal for Garage-to-House & Mechanical Rooms

Whether you are passing a home inspection or replacing an old utility door, installing a complete prehung steel unit avoids the hassle of retrofitting slabs into misaligned frames. The flat, flush design integrates seamlessly into modern basements, furnace rooms, and garage entry points.

Note: Fire-labeling requirements can vary by municipality. Please consult your local building inspector prior to ordering to ensure exact jamb and hardware compliance.

Prefer a raised panel look instead of flat steel? Check out our 6-panel steel fire-rated door.