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Single Steel Fire Door
UL 10C LISTED • IBC 2021 COMPLIANT
Single Steel Fire Door — The Standard Single-Leaf Rated Door
The single steel fire door remains the most specified and installed fire-rated opening in commercial construction. Bastion's Single Steel Fire Door offers a proven, economical solution for standard corridor, room, and stairwell openings in sizes ranging from 2'6" to 4'0" wide. Engineered with the same UL certified construction as our double and specialty doors, the single leaf design simplifies hardware selection, reduces installation complexity, and provides reliable fire protection for decades of service. Whether you need a basic 20-minute smoke door or a heavy-duty 3-hour industrial barrier, our single steel fire door delivers consistent performance.
Product Highlights
- ✓ Single leaf configuration — the most common and simplest fire door type
- ✓ Standard sizes in stock — 3070, 3270, 3670 ready for immediate shipment
- ✓ No pair-door hardware required — no astragal, coordinator, or flush bolts
- ✓ Factory prepped with 3 hinges, closer reinforcement, and lock prep
- ✓ Available as slab only or pre-hung on UL listed frame
- ✓ Full range of UL ratings — from 20-min smoke control to 3-hr high-hazard
- ✓ Standard sizes in stock — 3070, 3270, 3670 ready for immediate shipment
- ✓ No pair-door hardware required — no astragal, coordinator, or flush bolts
- ✓ Factory prepped with 3 hinges, closer reinforcement, and lock prep
- ✓ Available as slab only or pre-hung on UL listed frame
- ✓ Full range of UL ratings — from 20-min smoke control to 3-hr high-hazard
⏱ Quick Response • Factory Direct Delivery • Free Preliminary Quote
UL 10C Certified • 90-Min Fire Rating
Why Choose Our Fire-Rated Steel Doors
Three pillars that set us apart from US distributors and generic suppliers
Factory-Direct Pricing
Skip the distributor markup. Buy directly from the manufacturer and save 20–40% on your project cost. 15 years of experience, 500,000+ doors annual capacity — reliable bulk delivery you can count on.
Full Range UL/CE Ratings
From 20-minute to 3-hour ratings, all certified to UL 10C / NFPA 252 standards. WHI labels shipped with every door. One supplier covers every opening rating requirement in your project — no need to source from multiple vendors.
Quick Quote
For standard configurations and complete specifications, our team strives to provide a preliminary quote within 20 minutes.
METAL DOOR SPECIFICATIONS
Our commercial metal doors are constructed of the highest grade steel and with the following specifications:
- 1-3/4″ Thick, non-handed design with reversible hinge plates
- A40 Galvanized Steel
- Gray primer painted with baked on two stage epoxy resin.
- 18 Gauge Steel Face Sheets
- High-density rock wool core
- Hinge and Lock Edge seams “continuously” welded full length
- 12 Gauge Closer Reinforcement (18″ X 6″)
- 16 Gauge 161 Lock Prep. or 14 Gauge 86 Lock Prep
- 16 Gauge Flush Top Channel / Inverted Bottom Channel
- Square Door Edge
- 10 Gauge Hinge Reinforcement
Fire Ratings Explained
Choose the right UL fire rating for your application — all certified to UL 10C / NFPA 252
20 min
UL Rating: 1/3 hr
Corridors, office partitions, non-rated walls requiring smoke control.
45 min
UL Rating: 3/4 hr
1-hour fire wall openings, stairwells, hotel guest room corridors.
60 min
UL Rating: 1 hr
1-hour fire barriers, exit enclosures, vertical shaft separations.
90 min
UL Rating: 1-1/2 hr
1.5-hour fire walls, hazardous area enclosures, industrial separations.
3 hr
UL Rating: 3 hr
3-hour fire walls, high-hazard occupancy, severe fire exposure areas.
NON-FIRERATED
All ratings come with WHI certification labels affixed to each door. Verify authenticity online via WHI directory.
Door Sizes (All doors = 1-3/4″ thickness)
6′8″ Height
| Door Call Size | Nominal Width | Nominal Height |
|---|---|---|
| 2068 | 2′0″ (24 inch) | 6′8″ (80 inch) |
| 2468 | 2′4″ (28 inch) | 6′8″ (80 inch) |
| ⭐️2668 | 2′6″ (30 inch) | 6′8″ (80 inch) |
| 2868 | 2′8″ (32 inch) | 6′8″ (80 inch) |
| 21068 | 2′10″ (34 inch) | 6′8″ (80 inch) |
| 3468 | 3′4″ (40 inch) | 6′8″ (80 inch) |
| 3668 | 3′6″ (42 inch) | 6′8″ (80 inch) |
| 3868 | 3′8″ (44 inch) | 6′8″ (80 inch) |
| 4068 | 4′0″ (48 inch) | 6′8″ (80 inch) |
7′0″ Height
| Door Call Size | Nominal Width | Nominal Height |
|---|---|---|
| 2070 | 2′0″ (24 inch) | 7′0″ (84 inch) |
| 2470 | 2′4″ (28 inch) | 7′0″ (84 inch) |
| ⭐️2670 | 2′6″ (30 inch) | 7′0″ (84 inch) |
| 2870 | 2′8″ (32 inch) | 7′0″ (84 inch) |
| 21070 | 2′10″ (34 inch) | 7′0″ (84 inch) |
| 3470 | 3′4″ (40 inch) | 7′0″ (84 inch) |
| 3670 | 3′6″ (42 inch) | 7′0″ (84 inch) |
| 3870 | 3′8″ (44 inch) | 7′0″ (84 inch) |
| 4070 | 4′0″ (48 inch) | 7′0″ (84 inch) |
8′0″ Height
| Door Call Size | Nominal Width | Nominal Height |
|---|---|---|
| 2080 | 2′0″ (24 inch) | 8′0″ (96 inch) |
| 2480 | 2′4″ (28 inch) | 8′0″ (96 inch) |
| ⭐️2680 | 2′6″ (30 inch) | 8′0″ (96 inch) |
| 2880 | 2′8″ (32 inch) | 8′0″ (96 inch) |
| 21080 | 2′10″ (34 inch) | 8′0″ (96 inch) |
| 3480 | 3′4″ (40 inch) | 8′0″ (96 inch) |
| 3680 | 3′6″ (42 inch) | 8′0″ (96 inch) |
| 3880 | 3′8″ (44 inch) | 8′0″ (96 inch) |
| 4080 | 4′0″ (48 inch) | 8′0″ (96 inch) |
Configuration Options
Build your door with these customizable options — all factory-prepped for easy installation
Frame Type
/
Panel Styles
Welded
Frame Type
Knocked Down (KD)
Frame Type
Vision Lite
With glass window
Louvered
Ventilation grille
Swing Direction & Handing
LH (Left Hand)
Hinges on left, swings in
RH (Right Hand)
Hinges on right, swings in
LHR (Left Hand Reverse)
Hinges on left, swings out
RHR (Right Hand Reverse)
Hinges on right, swings out
Hardware Prep
Hinge Mortise Prep
Lock Body Prep
Door Closer Prep
Panic Device Prep
Seals & Accessories
Complete your fire door assembly with UL-listed accessories — one-stop solution
Floor Stop
ANSI/BHMA Grade 1 certified floor stop built. fully compliant with NFPA 80, ADA, and California Prop 65.
Threshold
Aluminum/saddle threshold, adjustable height, fire-rated gasketing.
Door Sweep
Bottom seal with neoprene insert, smoke and draft control.
Intumescent Seal
Fire-activated expanding seal, perimeter gasketing for smoke control.
Rain Drip / Canopy
Exterior door weather protection, aluminum hood with drip edge.
Kick Plate
Stainless steel or brass kick plate, 8″/10″/12″ heights available.
Smoke Seal
UL-listed smoke and draft control gasketing, perimeter installation.
Hinges & Closers
UL-listed spring hinges, ball-bearing hinges, and door closers.
Detailed Product Description
Technical Features
- Configuration : Single leaf, inswing or outswing
- Standard Widths : 2'6" / 2'8" / 3'0" / 3'6" / 4'0"
- Standard Height : 7'0" (6'8" and 8'0" available)
- Fire Rating : 20 / 45 / 60 / 90 / 180 minutes
- Door Skin : 18–20 ga. galvanized steel
- Core : Honeycomb / polystyrene / mineral wool
- Frame : 16 ga. single-rabbet, UL listed
- Hinge Prep : Standard 3 hinge (4 hinge for 8'0" height)
- Lead Time : Stock sizes: 3–5 days | Custom: 2–3 weeks
- Certifications : UL 10C, NFPA 252, NFPA 80, CAN/ULC-S104
Applications
- Office Building : The standard choice for private offices, conference rooms, and standard corridor doors in commercial buildings.
- Apartment : Economical and reliable for unit entry doors, utility closets, and mechanical room access in multi-family housing.
- School : Cost-effective solution for hundreds of identical classroom doors; standard sizes match typical educational facility schedules.
- Exit Corridor : 3'0" × 7'0" single doors are the industry standard for exit access corridor separations in most commercial occupancies.
Frequently Asked Questions
Common questions from buyers, contractors, and distributors
Send Your Project Specs
Tell us your project requirements — door sizes, fire ratings, hardware, quantities, and destination port. Our team will respond with a detailed quote within 24 hours.
Quick Quote Checklist: For the fastest response, include: ① Quantity & door sizes (W×H) ② Fire rating required (20/45/60/90 min or 3hr) ③ Hardware schedule (hinges/lock/closer) ④ Glass/louver requirements ⑤ Finish color (RAL#) ⑥ Destination port & target delivery date.
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