Internal Steel Doors

Defender Safeguard

Safeguard is our bestselling, ‘stronger than standard’ steel doorset, providing superlative performance and protection for every environment.

Add to spec Product copied Enquire Louvred Door Side and Over Panel Thermally Rated Acoustic Double Door DDA Compliant Single Door Vision Panel

The Defender Safeguard is our flagship bespoke steel door system—stronger as standard and fully customisable for any application.

Precision-engineered from 1.5mm galvanised steel with a mineral wool core and internal steel reinforcements, it delivers unmatched durability.

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Door Leaf

• Anti-jemmy flange on the leading edge (square edged option available)

• 1.5mm galvanised steel (upgrades: 2.0mm galvanised or 1.5mm stainless steel, 304/316)

• Weld-free construction prevents premature failure

• Mineral wool core with internal strengtheners (chipboard upgrade for added strength).

Thresholds

• Standard DDA-compliant chamfered profile in 2mm stainless steel

• Options: raised/extended cills, inward-opening profiles with drainage, 4mm ramped design

• Integrated removable thresholds available.

Vision Panels & Louvres

• Custom-sized vision panels in rectangular, square, or round styles

• Single, double, or triple glazed options with privacy films, blinds, and obscure glass

• Louvres: medium-duty aluminium or heavy-duty steel (150mm to full-door).

Frames

• 90mm single rebate frame in 2.0mm galvanised steel (stainless option available)

• Custom dimensions and alternative profiles (double rebated, face-fixed, ModuleX integral cloaking and more)

• Bolted corners for strength

• Threaded adjustors for easy installation (16+ fixings). Optional plain fixing plates

• 3mm steel hinge brackets. Insulated frames available.

Seals

Tubular silicone rubber seal bonded into frame for optimal weather, thermal, and acoustic performance.

Over Panels & Side Panels

Designed to expand openings, these panels integrate seamlessly with Defender Safeguard doorsets

• Removable overpanels/transoms: Ideal for periodic access (e.g. large machinery)

• Glazed panels: Single or double glazed with weathertight wedge-gasket seals

• Louvred panels: Medium-duty aluminium or heavy-duty steel cassettes (optional insect/rodent mesh).

Key Information

Ratings

Thermal Performance

Standard U-value: 2.2 W/m²K (upgradeable to 1.4 W/m²K with Thermaguard Technology).

Acoustic Option

Acoustic-rated option available (requires automatic drop seal).

Hardware & Finishes

Hardware

• Stainless steel ball bearing hinges (4+ per door, with security dogbolts)

• Upgrade options: concealed bearings, special finishes, fully concealed, heavy-duty continuous hinges

• Extensive hardware range: locks, latches, handles, panic hardware, closers, and stays. Custom hardware integration available.