Class B Fire Door – SANS 1253 Certified Fire Protection for South Africa

What Is a Class B Fire Door?

A Class B Fire Door is a high-performance fire-rated door designed to slow the spread of fire, heat, and smoke between compartments in a building. In South Africa, Class B fire doors are commonly installed in commercial buildings, factories, warehouses, hospitals, schools, apartment blocks, and high-risk industrial environments where enhanced fire protection is required.

A properly manufactured and installed Class B fire door helps protect escape routes, improves building safety, and supports compliance with South African fire regulations.

At ADX Safes, our Class B fire doors are engineered for durability, safety, and regulatory compliance. Every door is manufactured strictly in accordance with SANS 1253:2003 Edition 3 specifications to ensure dependable fire resistance and long-term performance.

Class B Fire Door Rating Explained

A Class B fire door carries the following certified fire resistance ratings:

• 2 Hour Stability
• 1 Hour Integrity
• 1 Hour Insulation

These ratings indicate the door’s ability to maintain structural stability, prevent the passage of flames and smoke, and reduce heat transfer during a fire event.

Fire Resistance Performance

This level of protection makes a Class B fire door suitable for applications where stronger fire compartmentalisation is required.

Manufactured to SANS 1253:2003 Edition 3

All ADX Class B fire doors are manufactured strictly to SANS 1253:2003 Edition 3 specifications.

$2\text{ Hour Stability}+1\text{ Hour Integrity}+1\text{ Hour Insulation}$

SANS 1253 is the South African standard governing the construction and fire performance of fire doors and fire door assemblies. Compliance with this standard ensures that the fire door has been designed and manufactured to meet stringent safety and fire-resistance requirements.

Our fire-rated doors are built using high-quality steel components and precision-engineered manufacturing processes to ensure reliability in demanding environments.

Applications for Class B Fire Doors

Class B fire doors are commonly used in:

• Commercial office buildings
• Warehouses and distribution centres
• Manufacturing plants
• Schools and universities
• Hospitals and clinics
• Apartment complexes
• Electrical and plant rooms
• Escape passages and stairwells
• Industrial facilities

These fire-resistant doors help create protected zones within a building, reducing fire spread and improving occupant safety during emergencies.

Why Choose ADX Class B Fire Doors?

Heavy-Duty Construction

ADX Class B fire doors are manufactured using robust steel construction for long-term durability and dependable fire resistance.

Compliance-Focused Manufacturing

Every fire door is manufactured strictly according to SANS 1253:2003 Edition 3 specifications.

Custom Sizes Available

We manufacture single and double leaf fire doors in various configurations to suit project requirements.

Industrial & Commercial Expertise

ADX Safes supplies fire-rated doors for industrial, commercial, and high-security applications across South Africa.

Fire Door Hardware Options

Our Class B fire doors can be fitted with:

• Fire-rated locks
• Panic bars
• Door closers
• Door coordinators
• Viewing panels
• Stainless steel kickplates

Importance of Proper Fire Door Installation

Even the best fire door can fail if incorrectly installed. Proper installation is critical to maintaining the fire resistance performance of the complete door assembly.

Professional installation ensures:

• Correct frame alignment
• Proper sealing
• Functional self-closing operation
• Compliance with fire safety requirements
• Reliable emergency performance

Regular maintenance and inspections are also essential to keep fire-rated doors operating correctly over time.

Class B Fire Doors South Africa

If you are searching for high-quality Class B fire doors in South Africa, ADX Safes offers compliant, heavy-duty fire door solutions manufactured to strict industry standards.

Our team can assist with:

• Fire door manufacturing
• Custom fire door sizes
• Commercial fire door projects
• Industrial fire-rated door solutions
• Fire door hardware
• Technical guidance and quotations