

Offices in
Victoria, Queensland, NSW
VIC - 1300 800 956
NSW - 1300 878 949
QLD - 1300 878 949
KEY FEATURES
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Fire rated up to 4 hours
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Door sizes up to 5m high and 6.8m wide
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Blast resistant
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Paint or powder-coat finishes available
ABOUT DURASUB BLAST DOORS
The Durasub Blast 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 Blast 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 delivers excellent impact resistance, durability, and long-term reliability in demanding environments.
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Each Durasub Blast Door is bespoke to the client’s exact specification and engineered to withstand explosive impacts. Specialised blast-rated hardware is selected to suit the specific performance requirements of each project, allowing virtually any size or configuration to be achieved while maintaining fire resistance of up to 4 hours.
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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
FEATURES
Blast Rating - upto...
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Fire resistance level up to - /240/30
Structural Opening
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Height: 5,000 mm
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Width: 6,800 mm
Door Leaf
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Overall Thickness: 50 mm
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Material: 9.5 mm thick composite panel of fibre-reinforced cement mechanically bonded to punched steel sheets on both outer faces.
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​Joint Construction: Mitred and welded​
​Frame
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Frame Options:
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Unequal angle frame: 150 × 90 × 8 mm
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Pressed metal frame: up to 50 mm wide with 25 mm rebate
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Capping: 90 × 50 × 3 mm thick angle section
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Joint Construction: Mitred and welded joints
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Configuration: Single or double rebate with three-sided frame
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Threshold Plate: 70 × 10 mm thick mild steel plate
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Acoustic Seals
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Frame: Full perimeter seals
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Door Leaf: Automatic bottom seal
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Finish
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Frame and Leaf: Paint finish or powder coating

HARDWARE (standard)
Hardware as Standard​
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Full-length piano hinge suitable for cladding
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TS83 door closer
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Panic exit device
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Two-way extension rods
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Night latch and handles
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Sequence selector
Certification
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Fire tested to AS 1530.4:2015
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Complies with AS 1905.1:2015
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Rated to international blast standards

DURASUB
D - EXT - 1
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AUSTRALIAN
STANDARDS
AS 1905:2015




