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Durasub Acoustic Fire Doors

DURASUB ACOUSTIC FIRE DOORS 

High-Performance Steel Fire Doors 

Blockade Barriers supplies and installs high-performance steel fire doors for demanding commercial and industrial environments. The Durasub range includes doors tested to provide up to 4 hours of  fire resistance, engineered to perform where safety and reliability are critical. 

KEY FEATURES

  • Fire rated up to 4 hours

  • Door sizes up to 5m high and 6.8m wide

  • Up to Rw 43 acoustic performance

  • Paint or powder-coat finishes available

ABOUT DURASUB ACOUSTIC FIRE DOORS

The Durasub Acoustic Fire Door range offers a level of flexibility rarely found in fire-rated steel doors. Each doorset is purpose-built to meet exact project requirements, with tested solutions available for openings up to 5 m high and 6.8 m wide. This makes the range ideal for complex or non-standard openings where fire performance cannot be compromised. 

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Available in single and double leaf configurations, Durasub Acoustic Fire Doors are suitable for both internal and external applications. 

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The doors are constructed from a high-strength composite panel of fibre-reinforced cement mechanically bonded to punched steel sheets on both outer faces. This construction provides excellent impact resistance, durability, and long-term reliability in demanding environments.

Durasub Acoustic Fire Doors have been independently tested for acoustic performance by accredited laboratories, achieving sound reduction ratings of up to Rw 43 while maintaining fire resistance of up to 4 hours.

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Each doorset is fitted with perimeter and bottom seals that comply with AS 1191-2002 and AS/NZS ISO 717-1:2004 acoustic performance standards, while maintaining the fire-resistance integrity of the door.

 

The doorsets are suitable for installation into all structural wall types. Once installed, they require minimal maintenance and deliver consistent, long-term performance in harsh or high-use environments.​​

TECHNICAL SPECIFICATIONS
Durasub Acoustic Fire Doors
FEATURES

Acoustic Rating - Up to Rw43

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Fire resistance level up to - /240/30

 

Structural Opening

  • Height: 5,000 mm

  • Width: 6,800 mm

 

Door Leaf

  • Overall Thickness: 50 mm

  • Material: 9.5 mm thick composite panel of fibre-reinforced cement mechanically bonded to punched steel sheets on both outer faces.

  • ​Joint Construction: Mitred and welded

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Frame

  • Frame Options:

    • Unequal angle frame: 150 × 90 × 8 mm

    • Pressed metal frame: up to 50 mm wide with 25 mm rebate

  • Capping: 90 × 50 × 3 mm thick angle section

  • Joint Construction: Mitred and welded joints

  • Configuration: Single or double rebate with three-sided frame

  • Threshold Plate: 70 × 10 mm thick mild steel plate

 

Acoustic Seals

  • Frame: Full perimeter seals

  • Door Leaf: Automatic bottom seal

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Finish

  • Frame and Leaf: Paint finish or powder coating

Durasub Acoustic Fire Doors
HARDWARE (standard)

Hardware as Standard​

  • Full-length piano hinge suitable for cladding

  • TS83 door closer

  • Panic exit device

  • Two-way extension rods

  • Night latch and handles

  • Sequence selector

Certification

 

  • Fire tested to AS 1530.4:2015

  • Complies with AS 1905.1:2015

  • AS 1191-2002 

  • AS/NZS ISO 717-1:2004

Hardware

DURASUB

D - EXT - 1 

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AUSTRALIAN 

STANDARDS

AS 1905:2015

Contact Durasteel Fire & Blast Doors Australia
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