Key Features
Fire-rated frames to complete your fire door assembly
Matched Fire Ratings
Frames rated to match door fire ratings: 30, 60, 90, and 120 minutes. Labeled and certified as complete assemblies with Euwoo fire doors.
- Rating match guarantee
- Complete assembly
- Code compliance
Welded & KD Options
Welded frames for strength and precision. Knocked-down (KD) frames for shipping economy and field assembly.
- Application options
- Shipping flexibility
- Installation choices
All Throat Depths
Standard throat depths from 4-3/4" to 8-1/4" for drywall and masonry. Custom depths available for any wall construction.
- Drywall ready
- Masonry compatible
- Custom available
Heavy-Gauge Steel
16 gauge standard, 14 gauge for heavy-duty. Cold-rolled steel for fire-rated applications per NFPA 80 requirements.
- Fire integrity
- Structural strength
- Hardware support
Anchor Systems
Multiple anchor options: base anchors, jamb anchors, T-anchors, and wire loop anchors for any installation method.
- Installation flexibility
- Secure mounting
- Wall type matching
Full Certifications
UL 10C, BS 476-22, EN 1634-1 labeled. Certified as assemblies with Euwoo fire doors for complete fire protection.
- Global compliance
- Assembly certification
- Code approval
Note: Fire door ratings are only maintained when doors are installed in properly rated frames. Order doors and frames together for guaranteed compatibility.
Fire Door Frame Construction
Frame types and construction for fire-rated assemblies
Fire door frames are the structural foundation of fire door assemblies, providing the mounting for the door, hardware, and sealing systems. Frame construction must withstand fire exposure while maintaining structural integrity to keep the door properly positioned.
Key Principle: Frame construction and proper installation are critical to fire door assembly performance.
The most common fire door frame type. Formed from sheet steel into profiles that create a hollow frame, which is then filled with grout or mineral fill during installation.
Advantages
- Most cost-effective fire frame option
- Wide variety of profiles and sizes
- Compatible with all wall types
Frames with fully welded corner joints for maximum strength and durability. Common for heavy-duty commercial and industrial applications.
Advantages
- Superior strength and rigidity
- No loose joints to separate
- Best for heavy doors
Frames shipped disassembled and assembled in the field. Used for retrofit applications where shipping one-piece frames is impractical.
Advantages
- Easy to transport and handle
- Fits existing openings
- Good for renovation projects
Limitations
- Limited to 60-minute max rating
Frames constructed from stainless steel for corrosion resistance and hygiene requirements. Common in healthcare, food service, and laboratory applications.
Grade Selection
- 304: Standard—healthcare, food service
- 316: Enhanced—chemical, coastal, harsh
Steel Gauge by Fire Rating
| Fire Rating | Minimum Gauge | Thickness | Typical Application |
|---|---|---|---|
| 20-minute | 18 gauge | 1.2mm | Smoke barriers |
| 45-minute | 16-18 gauge | 1.2-1.5mm | Corridor doors |
| 60-minute | 16 gauge | 1.5mm | Standard commercial |
| 90-minute | 14-16 gauge | 1.5-2.0mm | High-rise, enhanced |
| 120-minute | 14 gauge | 2.0mm minimum | Maximum protection |
Critical: Grouting Requirement
All hollow metal fire door frames must be grouted to achieve their fire rating. Incomplete grouting is the most common cause of fire door assembly failure. No voids permitted.
Materials: Portland cement grout (1:2 cement:sand), high-density mineral wool, or proprietary fire fill products.
Frame Profile Types
Single Rabbet
Standard profile with single door stop. Most common for single-acting doors.
Double Rabbet
Door stop on both sides for double-acting doors, special applications.
Flush Frame
Frame sits flush with wall surface. Clean appearance for healthcare.
Drywall Frame
Profile designed for drywall/steel stud walls construction.
Masonry Frame
Profile with masonry anchors for CMU and brick wall construction.
Borrowed Lite Frame
Frame designed to accept sidelight or transom for vision applications.
Frame Anchoring Systems
| Anchor Type | Wall Type | Installation Method |
|---|---|---|
| T-Anchors | Masonry (CMU, brick) | Set in mortar joints during wall construction |
| Wire Anchors | Masonry | Set in mortar joints |
| Compression Anchors | Drywall/steel stud | Field-adjusted for stud spacing |
| Strap Anchors | Steel stud | Screwed to steel studs |
| Post-Installed Anchors | Existing masonry/concrete | Drilled and installed in existing construction |
Frame Finish Options
Technical Specifications
Fire-rated frame specifications
Frame Configurations
Welded Frame
Factory-welded corners, shipped as one-piece unit
- • Perfectly square
- • Strongest option
- • Fastest installation
Best for: Fire-rated, heavy doors
KD Frame
Three-piece frame for field assembly
- • Lower shipping cost
- • Easier handling
- • Field adjustment
Best for: Renovation, retrofit
Drywall Frame
Throat sized for drywall construction
- • Drywall specific
- • Clean finish
- • Standard depths
Best for: Commercial drywall
Masonry Frame
Frame with anchors for masonry walls
- • CMU compatible
- • Concrete ready
- • Grouted installation
Best for: Masonry, CMU walls
Standard Throat Depths
| Throat Depth | Metric | Wall Type |
|---|---|---|
| 4-3/4" | 121mm | Standard drywall |
| 5-3/4" | 146mm | Fire-rated drywall |
| 6-3/4" | 171mm | Heavy drywall or furring |
| 8-1/4" | 210mm | 8" CMU masonry |
Anchor Options
Performance Data
Fire Door Frame Ratings
Frame ratings to match your fire door requirements
Fire door frames must be rated to match or exceed the fire door they support. A fire door assembly consists of the door, frame, and hardware working together—the frame rating must be compatible with the door rating for the assembly to achieve its fire protection.
Key Principle: Frame rating must equal or exceed door rating for valid fire door assembly.
Important: Rating Compatibility
Installing a 60-minute frame with a 90-minute door results in a 60-minute assembly rating. The fire door assembly rating is determined by the lowest-rated component.
Frame Rating Levels
Suitable for smoke barrier openings and locations where 20-minute doors are permitted.
Intermediate rating for corridors and 45-minute door applications.
The standard commercial fire door frame rating. Most common frame rating specified.
Enhanced rating for high-rise applications and where 90-minute doors are specified.
Maximum standard frame rating for the highest fire resistance requirements.
Frame and Door Rating Compatibility
| Frame Rating | Compatible Door Ratings | Assembly Rating Result |
|---|---|---|
| 20-minute | 20-minute only | 20-minute |
| 45-minute | 20, 45-minute | Door rating or 45-min max |
| 60-minute | 20, 45, 60-minute | Door rating or 60-min max |
| 90-minute | 20 through 90-minute | Door rating or 90-min max |
| 120-minute | All through 120-minute | Door rating or 120-min max |
Frame Fire Testing Standards
Fire Door Frame Comparison
Compare frame types for your application requirements
Frame Type Comparison
| Factor | Pressed Steel | Welded Steel | Knock-Down (KD) | Stainless Steel |
|---|---|---|---|---|
| Construction | Roll-formed hollow | Fully welded corners | Field-assembled | Welded stainless |
| Typical Gauge | 16-14 gauge | 14-12 gauge | 16-18 gauge | 16-14 gauge |
| Strength | Good | Excellent | Moderate | Excellent |
| Cost | $ | $$ | $-$$ | $$$$ |
| Fire Ratings | 20-120 min | 20-120 min | 20-60 min max | 20-120 min |
| Best For | Standard commercial | Heavy-duty/industrial | Retrofit/renovation | Healthcare/food service |
Recommended Frame Type by Application
Standard Commercial Office
Best value for standard commercial applications
High-Rise Stairwells
Maximum strength for heavy fire doors and high traffic
Healthcare Facilities
Hygiene requirements, easy cleaning
Renovation/Retrofit
Fits existing openings without major construction
Industrial/Warehouse
Abuse resistance, heavy door support
Food Service/Kitchen
Grease/moisture resistance, food safety
Frame Cost Comparison
| Frame Type | Material | Installation | Total Index | Value Assessment |
|---|---|---|---|---|
| Pressed Steel (primer) | $ | $ | 1.0x (baseline) | Best value for standard applications |
| Pressed Steel (powder coat) | $$ | $ | 1.3x | Standard commercial specification |
| Knock-Down | $-$$ | $ | 1.0-1.2x | Best for renovation |
| Welded Steel | $$ | $$ | 1.5-1.8x | Worth premium for heavy-duty |
| Stainless 304 | $$$$ | $$ | 3.0-3.5x | Required for healthcare/food |
Frame Selection Guide
Fire Door Frame Applications
Frame solutions for every building type and requirement
Fire door frames serve as the critical structural component in fire door assemblies across all building types. The frame type, material, and rating must be matched to the specific application requirements.
Key Principle: Frame selection must match application requirements for fire rating, durability, hygiene, and environmental resistance.
Application Selection Considerations
Fire Door Frame Installation
Proper installation procedures for fire-rated frame assemblies
Critical: Grouting is Mandatory
Incomplete grouting is the #1 cause of fire door assembly failure—NO VOIDS PERMITTED. Frames must be installed plumb, level, and securely anchored with complete grouting to achieve their fire rating.
Pre-Installation Requirements
Frame Verification
- • Verify frame matches approved submittals
- • Check fire label indicates correct rating
- • Confirm profile matches wall type
- • Verify size matches rough opening
Fire label must be present—reject unlabeled frames
Opening Preparation
- • Opening must be plumb, level, square
- • Wall construction appropriate for frame
- • Remove debris and obstructions
Tools & Materials
- • Level (minimum 1200mm/48")
- • Steel or composite shims (NOT wood)
- • Grout or mineral fill material
- • Fire-rated sealant
- • Anchoring hardware
Drywall/Steel Stud Frame Installation
Position Frame
Set frame in rough opening. Center frame with equal clearance on each side.
Shim & Plumb
Install steel/composite shims. Adjust until jambs are plumb and head is level.
No wood shims!
Square Frame
Measure diagonals corner to corner. Adjust until diagonals are equal within 3mm.
Activate Anchors
Expand compression anchors. Tighten evenly, re-check plumb after each anchor.
Grout Completely
Fill entire frame cavity. Work from bottom up. NO VOIDS!
Most critical step
Allow Cure
Cement grout: 24-hour cure before door. Mineral fill: immediate installation OK.
Seal Perimeter
Apply fire-rated sealant around entire frame perimeter. Fill all gaps completely.
Final Verification
Re-check plumb, level, square. Verify grouting complete. Check label visible.
Grouting Methods
Portland Cement Grout
- Low cost, traditional
- 24-hour cure required
Mineral Wool Fill
- No cure time needed
- Clean application
Proprietary Fire Fill
- Quick application
- Higher cost
Common Installation Mistakes
| Mistake | Consequence | Prevention |
|---|---|---|
| Incomplete Grouting | Assembly FAILS—frame cannot maintain integrity | Verify fill at all access points; document |
| Wood Shims Used | Shims burn in fire, frame shifts, assembly fails | Use ONLY steel or composite shims |
| Frame Not Plumb/Level | Door binding, improper latching | Check at each installation step |
| Missing Perimeter Seal | Smoke and fire bypass at frame-wall joint | Apply fire-rated sealant around entire perimeter |
| Label Damaged/Painted | Cannot verify rating; inspection failure | Protect label during installation and finishing |
Installation Checklist
Frame Identification
- ☐ Fire label present on frame
- ☐ Label rating matches specification
- ☐ Frame matches approved submittal
Frame Positioning
- ☐ Frame plumb (within 3mm)
- ☐ Frame level (within 3mm)
- ☐ Frame square (diagonals equal)
- ☐ Steel/composite shims used
Critical Completion
- ☐ Frame completely grouted—NO VOIDS
- ☐ Perimeter sealed with fire-rated sealant
- ☐ Label visible and legible
- ☐ Installation documented
Fire Door Frame Certifications
Standards and compliance for fire-rated frame assemblies
Fire door frames must be independently certified and labeled to be used in fire-rated assemblies. Frame certification confirms the frame has been tested and will perform its critical role in the fire door system.
Key Principle: Frames must be labeled and listed for use with the specific fire door rating and configuration.
Primary Certifications
UL listing confirms the frame has been tested as part of a fire door assembly per UL 10C and meets performance requirements.
- • Permanent metal label attached
- • Annual factory inspections
- • Listed in UL Product iQ database
Alternative listing through Intertek (formerly Warnock Hersey). Tested and listed per same standards as UL.
- • ETL or WHI label attached
- • Annual factory inspections
- • Intertek ETL Directory verification
NFPA 80 requirements apply to frame installation, inspection, and maintenance.
- • Frame labeled and listed
- • Installed per manufacturer requirements
- • Grouted completely (hollow metal)
- • Annual inspection required
FM Approved frames meet FM Global property loss prevention standards. Required for FM Global-insured facilities.
- • FM Class 4410 - Fire Door Frames
- • Listed in FM Approvals Guide
- • Important for industrial/commercial
International Certifications
Fire Door Frame Label Requirements
Label Must Include:
- • Fire rating (e.g., 60 min, 90 min)
- • Test standard (UL 10C, NFPA 252)
- • Manufacturer name
- • Listing agency mark (UL, WHI)
- • Listing or file number
Label Protection:
Do not paint over, remove, or damage label.
Missing or illegible labels void fire rating!
Euwoo Fire Door Frame Certifications
Our fire door frames carry comprehensive certifications:
Certifications
- • UL Listed (20 through 120-minute)
- • FM Approved (select products)
- • BS 476: Part 22 (FD30-FD120)
- • EN 1634-1 (EI30-EI120) with CE marking
- • GB 12955 (Grade A, B, C)
Quality Assurance
- • ISO 9001 manufacturing quality system
- • Annual audits by listing agencies
- • Complete documentation packages
Fire Door Frame Customization
Configure frames to match your project requirements
Fire door frames can be customized within certified parameters to meet specific project requirements. All custom configurations must remain within the tested and listed parameters to maintain fire rating certification.
Key Principle: Custom configurations available within certified parameters—verify listing compatibility.
Frame Size Options
Single Door Standard Sizes
- 762mm (30")
- 838mm (33")
- 914mm (36")
- 1016mm (40")
- 1067mm (42")
- 2032mm (80")
- 2134mm (84")
- 2286mm (90")
- 2438mm (96")
Stock sizes for fastest delivery
Double Door Standard Sizes
- 1524mm (60")
- 1676mm (66")
- 1829mm (72")
- 1981mm (78")
- 2134mm (84")
- 2032mm (80")
- 2134mm (84")
- 2286mm (90")
- 2438mm (96")
Pair configurations for wide openings
Frame Profile Options
Single Rabbet
Standard profile with single door stop for single-acting doors
Double Rabbet
Door stop on both sides for double-acting doors
Flush Frame
Frame sits flush with wall surface—clean appearance
Cased Opening
Frame with decorative casing for premium appearance
Frame Finish Options
| Finish | Description | Durability | Cost | Best For |
|---|---|---|---|---|
| Primer Only | Factory primer for field painting | Must paint within 6 months | $ | Field painting to match |
| Powder Coat | Full RAL color range (2,000+ colors) | Excellent | $$ | Standard commercial |
| Galvanized | Hot-dip or electro-galvanized | Excellent corrosion | $$-$$$ | Industrial, exterior-adjacent |
| Stainless Steel | #4 Brushed, #3 Satin, #8 Mirror | Maximum | $$$$ | Healthcare, food service |
| Wood Grain Laminate | HPL laminate over steel | Good | $$$ | Premium, hospitality |
Pre-Configured Frame Packages
Standard Commercial
60-min- • 16-gauge pressed steel
- • Primer finish
- • Single rabbet profile
- • Three hinge prep
- • Compression anchors
Heavy-Duty Commercial
90-min- • 14-gauge welded steel
- • Powder coat finish
- • Four hinge prep (heavy-weight)
- • Reinforced strike
- • Steel stud anchors
Healthcare
60-90 min- • 16-gauge or stainless
- • Antimicrobial powder coat
- • Flush profile option
- • Continuous hinge prep
- • Smoke seal groove
Industrial
90-120 min- • 14-gauge welded steel
- • Galvanized or powder coat
- • Five hinge prep
- • Exit device prep
- • Heavy-duty anchors
Retrofit/Renovation
Up to 60-min- • Knock-down frame
- • Adjustable wall depth
- • Field-assembled corners
- • Compression anchors
- • Primer for field paint
Frequently Asked Questions
Common questions about fire door frames
Get Your Fire Door Frame Quote
Complete your fire door assembly with certified frames. Get competitive factory-direct pricing on fire-rated frames to match your doors.