• This Door Must Remain Locked sign – blue mandatory PPE safety sign by Bold Safety Signs
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Bold Safety Signs

This Door Must Remain Locked Sign

This Door Must Remain Locked Sign

$31.90 AUD
$31.90 AUD
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Taxes included. Shipping calculated at checkout.
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Complete Your Safety Setup

Signs that are often installed together. We match your selected size, material and finish where available.

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Can't find the exact sign you need? Design a Custom Safety Sign →

The This Door Must Remain Locked Sign from Bold Safety Signs reminds staff that a door must stay locked when not in use.

Ideal for: stores, cash rooms, chemical stores, server rooms and plant rooms.

About this sign

Mandatory signs tell people what they must do to stay safe in an area. They are recognised by a white symbol inside a solid blue circle, with the instruction in black underneath.

Choose your material

  • Colorbond – rigid pre-painted steel. Our toughest option for permanent outdoor installation on fences, gates and walls.
  • Corflute – lightweight fluted polypropylene. Weatherproof and economical, ideal for temporary sites and short-term projects.
  • PVC Foam Board – smooth, rigid and lightweight. A clean finish for indoor walls, doors and sheltered outdoor areas.

Choose your finish

  • Non-Reflective – standard printed finish for well-lit areas.
  • Reflective – reflective sheeting that stays visible in headlights and low light, ideal for car parks, roadsides and night works.

Available sizes

  • 300 × 450 mm
  • 450 × 600 mm

Complete your safety setup

Browse our full range of mandatory PPE signs. Can't find the exact wording you need? Design a custom safety sign. Free standard shipping Australia-wide on orders of $149 or more – see our shipping policy.

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