Fire-Rated Metal Door is a crucial component of any building’s passive fire protection system. It’s designed not only to protect lives and property but also to meet strict fire safety codes and insurance requirements. If you’re seeking strength, fire resistance, and compliance in one solution, the 18 Gauge A40 Galvanneal fire-rated metal door is an excellent choice.
Let’s dive into the specifications, benefits, and available options that make this door an ideal choice for both commercial and industrial applications.
🔧 What is a Fire-Rated Metal Door?
A fire-rated metal door is built with fire-resistant materials and tested to withstand high heat, flames, and smoke for a specified period — from 20 minutes up to 3 hours. Unlike standard doors, these metal doors are designed to compartmentalize fire and provide safe egress.
The 18 Gauge A40 Galvanneal Door stands out for its exceptional durability, thermal insulation, and high-performance fire rating certifications.
Core Construction & Materials
The core of the fire-rated door determines its strength, insulation, and fire resistance. You can choose from:
- Polystyrene Core: Provides excellent thermal insulation and rigidity
- Honeycomb Core: Offers lightweight support with sound-deadening benefits
- Mineral Core: Ideal for high fire-rating requirements
- Particle Board Core: A cost-effective option for interior use
🏗️ Fire-Rated Metal Door Specifications
🚪 Door Construction:
- 18 Gauge A40 Galvanneal steel
- Interlocking edge seam with square hinge edge
- Beveled lock edge for smoother latch engagement
- Heavy gauge closer reinforcement for door closers
- 10-gauge minimum hinge reinforcements
- 16-gauge inverted top and bottom caps for added structural integrity
- Prime painted finish – ready for topcoat or final finish
🔥 Fire Rating Certifications:
- Fire-rated options include Non-rated, 20-minute, 45-minute, 60-minute, 90-minute, and 3-hour fire labels
- Fire-rated insulated glass is available
- Certified up to 3 hours (ITS/WHI label)
- Meets or exceeds ANSI A208.1 and CS236-66 standards
📏 Sizes, Thickness, and Undercuts
- Standard thickness: 1-3/4″
- Standard widths: Up to 4’0”
- Standard heights: Up to 8’0”
- Custom sizes: Available on request
- Undercut: 3/4” standard for air clearance and smoke control
🎨 Finish & Appearance Options
- Available in unfinished and prime painted for custom topcoats
- Optional stained finishes include:
- Clear Pre-finished
- Mahogany
- Traditional Cherry
- Golden Hickory
- Dark Walnut
- Dark Oak
- Autumn Oak
These options allow you to match your door aesthetics with surrounding interior design or exterior finishes.
🧩 Standard & Optional Hardware Preps
Standard Preps:
- 161 prep for cylindrical locks
- 86 Edge prep for mortise locks
- Deadbolt prep
- RPD (blank edge with panic reinforcement)
Optional Preps:
- Exit device trim
- Lite and louver cutouts
- Deadbolt reinforcements
- Continuous hinge applications (for undersized widths)
🔄 Handing and Compatibility
- Non-handed design with reversible hinge plates
- Compatible hinge and lock locations include:
- Steelcraft
- Mesker
- Ceco
- Curries
- Republic
- Baron
- DKS
- Pioneer
- Deansteel
- Custom prep locations available
✅ Benefits of Choosing a Fire-Rated Metal Door
- 🧯 Enhanced Fire Safety: Certified up to 3 hours for fire resistance
- 💪 Durability: Galvanneal steel resists corrosion and impact
- 🔒 Security: Reinforced edges and hardware mounting points
- 🌡️ Thermal Insulation: Polystyrene or honeycomb core helps regulate temperature
- 🎨 Customizable Finish: Aesthetic flexibility for any application
- 📐 Custom Sizes & Hardware Preps: Made to fit project requirements
- 🏢 Code Compliant: Meets ANSI and local building/fire code standards
🧾 Applications
Fire-rated metal doors are perfect for:
- Commercial buildings
- Industrial facilities
- Hospitals and healthcare environments
- Educational institutions
- Warehouses and mechanical rooms
- Interior fire-rated partitions
- High-traffic exit and corridor doors
Whether you need a heavy-duty fire door for an emergency stairwell or a decorative option for an office, this product meets performance and aesthetic expectations.
🔚 Conclusion
Choosing a fire-rated metal door like the 18 Gauge A40 Galvanneal model ensures durability, fire resistance, and compliance with safety standards. With a wide range of cores, finishes, sizes, and preps, this door is tailored for performance and style in high-demand settings.
