The Short Answer: What Size Should It Be?
For most Malaysian premises, a fire extinguisher location sign of 15 x 15 cm to 20 x 20 cm is the practical standard — readable from roughly 15 to 20 metres in normal lighting. But "what size" is the wrong first question. Malaysian law does not fix one universal dimension. Instead, the correct size is the one that stays clearly visible from the furthest point a person might approach from, calculated from your viewing distance using the MS ISO 3864-1 formula. This guide shows you exactly how to work it out, what DOSH and BOMBA actually require, how to match the sign to the extinguisher type (ABC, CO2 and more), and which sign to use for long corridors.
Is There a Fixed Legal Size in Malaysia?
No — and this is the single most misunderstood point. No Malaysian statute states "a fire extinguisher sign must be X centimetres". What the law requires is that fire-fighting equipment is provided and its location conspicuously and durably indicated. Several overlapping instruments apply:
- Occupational Safety and Health Act 1994 (OSHA 1994) — administered by DOSH (Jabatan Keselamatan dan Kesihatan Pekerjaan). Employers must provide a safe workplace, which includes clear, visible signage identifying fire-fighting equipment.
- MS 2558:2014 — the Malaysian Standard governing the design, colour and placement of workplace safety signs.
- MS ISO 3864 and MS ISO 7010 — adopted international standards that define the safety colours, the geometric design, the registered pictograms, and — critically — how sign size is derived from viewing distance.
- Fire Services Act 1988 and the Uniform Building By-Laws 1984 (UBBL) — enforced by BOMBA. Fire appliances must be installed and their positions clearly marked so they can be found quickly in an emergency.
- MS 1539 — the standard covering selection and placement of portable fire extinguishers (mounting height, travel distance, and marking the location).
The takeaway: there is no fixed number to memorise. There is a performance requirement — the sign must be conspicuous from the relevant viewing distance — and a standard method (MS ISO 3864-1) for turning that distance into a minimum size. Get the method right and you are compliant for any space. For the full picture of every safety sign type, see our complete guide to safety signage in Malaysia.
The Real Rule: Viewing Distance (MS ISO 3864)
MS ISO 3864-1 sizes safety signs using one simple relationship:
L = Z × h → h = L / Z
h = height of the sign · L = maximum viewing distance · Z = distance factor (lighting condition)
The distance factor Z changes with how the sign is lit:
- Z = 100 — normal lighting / externally illuminated signs (the usual case)
- Z = 200 — internally illuminated (back-lit) signs, which can be smaller for the same distance
- Z = 50 — poor or emergency lighting, where the sign must be larger
Worked example. A fire extinguisher in a normally-lit office corridor must be spotted from up to 20 metres away. Using Z = 100: h = 20 / 100 = 0.20 m, so the sign needs to be at least 20 cm tall. If the same corridor relied on emergency lighting only (Z = 50), the minimum jumps to h = 20 / 50 = 0.40 m — a 40 cm sign, or better, a back-lit / photoluminescent one.
Recommended Fire Extinguisher Sign Sizes
Using the MS ISO 3864-1 method in normal lighting (Z = 100), here are practical sizes that keep you compliant for typical Malaysian spaces:
| Max viewing distance | Min sign height (MS ISO 3864) | Recommended UMAKE size |
|---|---|---|
| Up to 10 m (small room, shop) | 10 cm | 15 x 15 cm |
| Up to 15 m (office, clinic) | 15 cm | 15 x 15 cm / 20 x 20 cm |
| Up to 20 m (corridor, showroom) | 20 cm | 20 x 20 cm |
| Up to 30 m (warehouse, factory) | 30 cm | 30 x 30 cm or projecting V/L sign |
| Long corridor, both directions | Use a projecting sign | Projecting (V/L) double-sided sign |
Rule of thumb: pick the size whose minimum height equals or exceeds your longest sightline. When in doubt, go one size up — an over-sized fire sign is never a compliance problem; an undersized one is.
Colour, Pictogram & Wording
Size is only half of compliance — the sign must also be recognisable. Under MS ISO 3864 the safety colour for fire-fighting equipment is red. A correct fire extinguisher location sign is a red square or rectangle with a white pictogram (the registered flame-and-extinguisher symbol from MS ISO 7010), usually with white text below.
- Background: safety red (the fire-equipment colour)
- Symbol & text: white, high contrast
- Pictogram: the standardised extinguisher symbol — understood instantly, regardless of language
- Wording: Malaysian premises commonly use bilingual text, "Fire Extinguisher / Pemadam Api", so it is clear to all staff and visitors
Using the registered pictogram matters: a symbol that follows MS ISO 7010 is recognised immediately and removes any ambiguity during an emergency.
Match the Sign to the Extinguisher Type (ABC, CO2 & More)
A location sign is most useful when it also tells people which type of extinguisher they are reaching for — using the wrong type on the wrong fire can be dangerous or useless. In Malaysia, extinguisher bodies are red, with a colour-coded band or label identifying the contents (the BS EN 3 system that BOMBA follows). Good signage repeats that band colour and the fire class so staff choose correctly under pressure.
| Extinguisher type | Band colour | Fire classes | Best for |
|---|---|---|---|
| ABC Dry Powder | Blue | A, B, C + electrical | General use — offices, shops, corridors, cars |
| CO2 (Carbon Dioxide) | Black | B + electrical | Server rooms, electrical panels, labs |
| Water | Red | A | Paper, wood, textiles |
| Foam (AFFF) | Cream | A, B | Mixed solids + flammable liquids |
| Wet Chemical | Yellow | F (cooking oils) | Commercial kitchens |
ABC dry powder (blue band) is by far the most common all-rounder in Malaysian offices, shops and corridors — it handles Class A, B, C and electrical fires, so a single unit covers most everyday risks. CO2 (black band) is the go-to wherever electronics or live electrical equipment are involved — server rooms, switch rooms and laboratories — because it leaves no residue. Mark each location with a sign that mirrors the type, and you remove the guesswork in an emergency.
Need help with Safety Signage?
Get a free quote from UMAKE — custom signage designed and manufactured in Malaysia.
Fire classes at a glance
- Class A — solids (wood, paper, cloth)
- Class B — flammable liquids (petrol, oil, solvents)
- Class C — flammable gases (LPG)
- Electrical — live equipment (use CO2 or dry powder)
- Class F — cooking oils and fats (use wet chemical)
BOMBA note: every commercial extinguisher in Malaysia must carry a valid BOMBA license sticker and be serviced annually. Your sign marks the location; the sticker proves the unit itself is compliant and in date.
Mounting Height & Placement (MS 1539)
A correctly-sized sign still fails if it is hidden. MS 1539 and BOMBA practice give clear placement rules:
- Extinguisher height: mount the extinguisher with its carrying handle about 1.0–1.2 m from the floor (and not higher than 1.3 m for heavier units), so it is easy to lift in an emergency.
- Sign position: place the location sign directly above the extinguisher, high enough to be seen over people, shelving and equipment from across the room.
- Travel distance: a person should rarely have to travel more than about 15–30 m to reach an extinguisher (shorter in high-hazard areas) — which is also why the sign must be visible from that distance.
- Keep it clear: never block the extinguisher or its sign with boxes, doors, curtains or decor.
Flat Sign vs Projecting (V-Shape / L-Shape) Sign
There are two practical formats, and the right choice depends on geometry:
Flat (wall-mounted) sign
A flat sign sits flush on the wall directly above the extinguisher. It is perfect when people approach the spot face-on — small rooms, shops, reception areas and individual workstations. This is where the 15 x 15 cm and 20 x 20 cm sizes from the table above apply.
Projecting (V-shape / L-shape) sign
In a long corridor, a flat sign is invisible until you are right under it. A projecting sign sticks out perpendicular to the wall so it can be read from far away, down the length of the passage:
- V-shape (double-sided): two angled faces form a "V", so the sign is readable from both directions along the corridor — ideal for through-corridors in factories, warehouses and hospitals.
- L-shape (single projecting face): one face projects out at 90° — perfect at the end of a corridor or where people mostly approach from one direction.
Need Compliant Fire Extinguisher Signs?
UMAKE manufactures fire safety signs in the correct red/white MS ISO 7010 format — flat, V-shape and L-shape projecting, ABC and CO2 versions, in every size from 15 cm up. Factory-direct from Balakong, Selangor.
Browse Safety Signages →UMAKE Fire Extinguisher Signs
All UMAKE fire safety signs use the correct safety-red background, a white MS ISO 7010 pictogram, and bilingual "Fire Extinguisher / Pemadam Api" wording. Choose by your viewing distance, extinguisher type and corridor layout:
3D Acrylic Fire Extinguisher Sign (Flat)
A premium flat wall sign in 15 x 15 cm and 20 x 20 cm — the everyday choice for offices, shops and clinics. Durable UV-printed acrylic that will not fade. From RM19.90. View the 3D Acrylic Fire Extinguisher Sign →
Fire Safety Projecting Sign (V-Shape / L-Shape)
The corridor solution — it projects from the wall so it is visible from both directions, from far down a long passage. Choose V-shape (double-sided) or L-shape (single face). Ideal for factories, warehouses and hospital corridors. From RM15.99. View the Projecting Fire Sign →
Fire Extinguisher PASS Instruction Sign
Pairs with your location sign to show the PASS operating steps — Pull, Aim, Squeeze, Sweep (Cara Pakai Alat Pemadam Api) — right where the extinguisher hangs. From RM12.90. View the PASS Instruction Sign →
Need a custom size for a 30 m+ warehouse sightline, an ABC-specific or CO2-specific label, or bulk quantities for a multi-floor building? We manufacture to spec — see our full office and door signage guide, or message us for a quote.
Frequently Asked Questions
What size should a fire extinguisher sign be in Malaysia?
For most premises, 15 x 15 cm to 20 x 20 cm covers viewing distances of 15–20 m in normal lighting. The exact minimum is set by MS ISO 3864-1: sign height = viewing distance ÷ 100 (normal lighting). For a 30 m warehouse sightline, use a 30 cm sign or a projecting sign.
Is there a law that sets one exact fire extinguisher sign size?
No. Malaysian law (OSHA 1994/DOSH, Fire Services Act 1988, UBBL/BOMBA) requires that fire equipment is provided and its location conspicuously marked, but it does not fix a single dimension. Size is derived from viewing distance using MS ISO 3864-1.
What is the difference between an ABC and a CO2 fire extinguisher sign?
ABC dry powder extinguishers carry a blue band and cover Class A, B, C and electrical fires — the general-purpose choice for offices and shops. CO2 extinguishers carry a black band and suit flammable-liquid and electrical fires, common in server rooms and labs. The location sign should echo the band colour and class so staff grab the right unit.
What colour must a fire extinguisher sign be?
Red. Under MS ISO 3864 the safety colour for fire-fighting equipment is red, with a white pictogram and white text. The flame-and-extinguisher symbol follows MS ISO 7010.
How high should a fire extinguisher and its sign be mounted?
Mount the extinguisher with its handle about 1.0–1.2 m from the floor (not above 1.3 m for heavy units), and place the location sign directly above it, high enough to be seen across the room over people and equipment.
What is the difference between a V-shape and an L-shape projecting sign?
A V-shape sign has two angled faces so it reads from both directions along a corridor — best for through-corridors. An L-shape sign has one projecting face at 90° — best at the end of a corridor or where people approach from one side.
Do fire extinguisher signs need to be bilingual?
It is not strictly mandated, but Malaysian premises commonly use "Fire Extinguisher / Pemadam Api" so the sign is clear to everyone. The standardised pictogram is understood regardless of language.
Should fire extinguisher signs be photoluminescent (glow-in-the-dark)?
It is strongly recommended where lighting may fail. In poor/emergency lighting the MS ISO 3864 distance factor drops to Z = 50, so signs must be much larger — a photoluminescent or back-lit sign stays visible during a blackout.
Get the Right Fire Extinguisher Signs from UMAKE
Measure your longest sightline, apply the MS ISO 3864 formula, match the sign to your ABC or CO2 extinguisher, and pick a flat or projecting (V/L) sign that stays visible. UMAKE manufactures compliant fire safety signs in-house in Balakong, Selangor — standard sizes ship fast, and we cut custom sizes and bulk orders to spec.
