Two channel letter signs can look the same in a photo and still differ a lot in how long they last. The aluminium, the face, the LEDs, how water gets out and how the letters are fixed all matter in Dubai's heat, dust and humidity. This page explains what channelium letters are, how they're built, the lighting and mounting options, the sizes that work for Arabic and English, what they cost, and how to keep them running.
What are channel letters (and what is channelium)?
Channel letters are individual 3D letters built as hollow metal cans, usually aluminium, with LEDs inside and a translucent face that lights up. Each letter has a back, sides (called returns) and a face. In the UAE they're called channelium or channelume letters, because the returns are formed from pre-painted aluminium strip sold under that name.
The name "channel" comes from the shape: each letter is a channel, open at the front, that holds the light. Before LEDs, channel letters were lit with neon tubes and were 130 to 150 mm deep. With LEDs they've become much shallower, often 50 to 80 mm, according to Wikipedia's summary of the trade, which makes them lighter and neater on a fascia.
Channelume, channelium and channel letters: the same thing
"Channelume" is the trade name suppliers use for aluminium coil made for letter returns, and it has become the everyday word for the letters themselves in the Gulf. You'll see it spelled channelume, channelium, chanellium and channel aluminium. They all mean the same thing: letters with aluminium sides bent to the shape of each character.
The coil is a long, narrow strip of aluminium, painted at the factory, sold in rolls. Its width sets the depth of the letter. Local suppliers stock common depths of 70, 90 and 110 mm (Perfect Trading), in colours such as matte white, black, red and silver, and in gold and other mirror finishes. A bending machine, or a skilled hand for small jobs, bends the strip around the outline of each letter.
Why channel letters are so common in Dubai
- They're read from far away. A lit face on a dark fascia can be read from across a road or a car park at night, which most other letters can't match.
- They suit the 2026 shopfront rules. Individual lit letters with controlled brightness fit the rules for trade-name signs better than an old white light box. See our shop signs guide.
- They last. Aluminium doesn't rust, and pre-painted coil keeps its colour for years. Good LEDs and drivers run for many years with little upkeep.
- They're light. A hollow aluminium letter weighs far less than a solid or steel letter of the same size, so it can go on ACP cladding, glass curtain walls and upper floors.
- They can be almost any shape. Logos, script fonts and Arabic calligraphy can all be built as channel letters, within the limits we explain further down.
How a channel letter is built
A channel letter has five parts: an aluminium back cut to the letter shape, aluminium returns bent around it, LED modules fixed inside, a translucent face on the front, and a trim or profile that holds the face in place. How well each part is made decides how evenly the letter lights and how long it keeps water and dust out.
| Part | What it is | What to ask for |
|---|---|---|
| Back | Aluminium or ACP sheet, cut by CNC to the letter shape | Aluminium or ACP for outdoor letters; clear polycarbonate for halo letters |
| Returns (sides) | Pre-painted aluminium coil (channelume), bent to shape | Around 1 mm coil for outdoor letters; depth to suit letter size |
| LEDs | Sign LED modules, wired in chains, fed by a driver | Named brand, outdoor-rated, planned spacing |
| Face | Translucent acrylic or polycarbonate, often with vinyl | 3 mm acrylic for most letters, thicker or polycarbonate for large or low letters |
| Trim | Trim cap around the face edge, or a trimless profile | Trim colour matched to returns or face |
Returns: the aluminium sides
The returns take the most abuse from sun and weather, so the coil matters. Coil suppliers make it from 0.5 to 1.6 mm thick, with 1.0 mm described as the industry standard and thinner coil meant for light-duty indoor letters (Worthwill). For large letters, a US equipment maker recommends heavier aluminium, about 2 mm for letters above 900 mm (Ascent).
For outdoor letters in Dubai we use coil of about 1 mm and go heavier for big letters. Thin coil is cheaper and easier to bend, which is why low quotes often use it, but it dents easily and can ripple in the heat. The coil's factory paint is what stops the colour fading, so we don't repaint it unless you need a special colour, and then we use an exterior-grade paint.
The face: acrylic or polycarbonate
The face is what people see lit. Most channel letters use 3 mm opal (milky white) acrylic, sometimes thicker for large letters; polycarbonate is the tougher option (Ascent). Acrylic is clearer, cheaper and keeps its look in the sun. Polycarbonate is far harder to break, so it suits letters within reach of people or trolleys, but some grades yellow faster in UV. For most fascias above head height, acrylic is the right choice.
Trim cap or trimless
Traditionally the face is held on by trim cap: a U-shaped plastic strip that clips over the face and wraps around the edge of the return. It's quick and cheap, and it gives a visible border around each letter, usually 20 to 25 mm wide, often in the same colour as the returns.
Trimless letters use an aluminium profile with a groove that grips the face, so there's no visible border. A trade equipment maker describes the face as held mechanically in the groove, with no adhesive along the edge (Ascent). The result looks cleaner and more modern, which suits premium brands, but it needs special bending equipment and costs a little more. Very thin strokes and tight corners are easier with trim cap.
Back, drainage and sealing
Rain is rare in Dubai, but condensation, dust and the odd storm aren't. A channel letter needs small drain holes at the lowest points so any water that gets in can run out, and a light baffle over the holes so they don't let in bright spots of light. Joints between back and returns are sealed with a sign-grade sealant. On the letters we make, the back is fixed with rivets or screws, not just glue, so it won't open up after a few summers.
LEDs and drivers
Inside, rows of small LED modules are stuck to the back and wired together, then connected to a driver (a power supply that converts mains power to low voltage). The two things that decide the quality of the light are spacing and depth. If the modules are too far apart, or the letter is too shallow for the modules used, you see bright dots and dark gaps on the face. We lay out LEDs for each letter in software, using the module maker's spacing for the letter's depth, and light-test every letter before it leaves the workshop.
The driver is the part most likely to fail first, especially if it's shut in a hot, sealed space. We use outdoor-rated drivers with spare capacity, and we put them where they can be reached: inside a raceway, behind an access panel, or in the ceiling void behind the fascia.
Lighting options
Channel letters can be lit in four main ways: through the face (front-lit), onto the wall behind (halo or back-lit), both at once, or not at all. Front-lit letters are the easiest to read from a distance, halo letters look more premium, and the choice also changes the depth, cost and how the letters must be fixed.
| Lighting | How it works | Looks like | Best for |
|---|---|---|---|
| Front-lit | LEDs shine through a translucent face | Bright, clear letters at night | Shop fascias, main roads, anything read from far away |
| Halo-lit (reverse) | Solid metal face, open or clear back, light spills onto the wall | Letters in silhouette with a glow behind | Boutiques, clinics, receptions, premium brands |
| Front and halo | Translucent face and clear back | Lit letters with a glow behind | Statement signs, showrooms |
| Non-lit | No LEDs; returns and face in colour or metal | 3D letters by day, lit by spotlights at night | Offices, gated sites, budget signs |
Front-lit channel letters
This is the most common channel letter sign in Dubai and the one most people mean by "channelium letters". It's the brightest and easiest to read, and colour can come from a coloured acrylic face or from translucent vinyl on a white face. Front-lit letters can have white, coloured or black returns; black returns make the face look crisper.
Halo-lit channel letters
Here the face is solid aluminium or steel, and the LEDs face backwards, onto the wall. The letters stand off the wall on spacers, usually 30 to 50 mm, and the light forms a soft glow around each letter. Halo letters are usually the most expensive form to make (Wikipedia), and they need a smooth, matte wall to reflect the glow evenly. A glossy wall shows every LED as a bright spot, and heavy texture breaks the halo up. There's much more on this in our halo-lit letters guide.
Front and halo (combination)
Letters with both a lit face and a lit back give the strongest effect after dark. They cost the most and use the most power, so we suggest them for main building signs and flagship stores where the sign is part of the brand.
Non-lit channel letters
A channel letter without LEDs is still a sturdy, hollow 3D letter, and it costs noticeably less. It's a good choice where the business isn't open at night, where a landlord doesn't allow lit signs, or as a first step: we can build the letters so LEDs can be added later.
Day/night faces
A day/night face uses a special perforated vinyl that looks black in daylight and shows white light at night. It's a neat way to get black lettering by day and lit letters after dark. It's also useful for brands with a black logo that would otherwise be hard to light.
Faces, colours and finishes
A channel letter's colour comes from three places: the face, the returns and the trim. Getting a brand colour right, both in daylight and when lit, is mostly about the face.
- Coloured acrylic faces come in standard sign colours (reds, blues, greens, yellows). They light evenly and don't fade quickly, but the range is limited.
- White face with translucent vinyl is how most brand colours are matched. The vinyl is made for lit signs, so the colour looks right both day and night. This is our usual choice for logos.
- Printed faces carry gradients and multi-colour logos, printed with UV inks onto the acrylic or onto translucent film.
- Returns are usually white, black, silver or a brand colour from the coil range. Gold and other mirror coils are available for a premium look, and custom colours can be sprayed.
- Trim cap is usually matched to the returns so the letter reads as one piece, or to the face so the border disappears when lit.
One thing to test: brand colours often shift when lit. A dark blue or burgundy can look almost black in the day and purple at night. We make a small lit sample for colour-critical brands before production.
Size, depth and stroke width
The right size depends on how far away people will read the sign, and the right depth depends on the letter size and lighting. A common sign-industry rule of thumb (based on 1 inch per 10 feet) is about 25 mm of letter height for every 3 metres of viewing distance for good impact.
| Letter height | Typical return depth | Typical use |
|---|---|---|
| 200–400 mm | 50–70 mm | Mall units, small shop fronts, receptions |
| 400–800 mm | 70–110 mm | Street shop fascias, showrooms |
| 800–1,500 mm | 110–150 mm | Building names, large logos |
| Above 1,500 mm | 150 mm+ with internal bracing | Building tops, towers, highway-facing signs |
So a shop across a 30-metre road needs capital letters of at least 250 to 300 mm, and a sign on a building read from a main road 100 metres away needs letters of about a metre or more. Upper-storey signs also need taller letters than you'd expect, because people read them at an angle.
Minimum stroke width
The narrowest part of a letter (the stroke) must be wide enough to bend the returns around and fit LEDs inside. As a rule we keep strokes on lit letters to at least 20 to 25 mm, and letters smaller than about 150 mm high are hard to build well as channel letters. For small text such as a tagline, we usually make it from flat-cut acrylic or print it on a panel, while the main name is a channel letter. Our acrylic letters guide explains those options.
Arabic channel letters
Almost every trade-name sign in Dubai needs Arabic, and Arabic script brings its own challenges for channel letters.
- Dots and small marks (the dots of ب, ت, ن and so on) are small separate pieces. On smaller signs they may be too small to light, so we make them solid, or enlarge them slightly in agreement with you.
- Connected letters mean a word is often built as one long shape rather than separate letters. This takes more bending time and careful LED planning.
- Thin strokes and tight curves in calligraphic fonts may need to be thickened or simplified for the sign. We do this on the drawing so you approve exactly what will be made.
- Balance with English. Under the 2026 rules the Arabic name goes above the English. The two should look equally strong, which usually means the Arabic cap height is close to the English.
We'd rather adjust a font for fabrication on the mockup than have you discover thick dots and wobbly curves after installation.
Channel letters vs other 3D letters
Channel letters are the best choice when a sign must be lit and read from a distance. Other 3D letters suit different jobs, and many signs combine them.
| Letter type | Strengths | Weaknesses | Best for |
|---|---|---|---|
| Channel letters (aluminium) | Bright, light, durable, large sizes | Minimum size and stroke width; visible trim unless trimless | Fascias, building signs, lit logos |
| Acrylic letters | Fine detail, many finishes, lower cost | Less depth; scratches; limited outdoor size | Receptions, interiors, small signs |
| Stainless steel and brass letters | Premium look, tough | Heavier, dearer; face can't light (halo only) | Luxury brands, hotels, offices |
| Light box sign | One cabinet, cheapest to light a large area | Less premium; white backgrounds restricted under the 2026 rules | Budget signs, projecting signs |
A popular mix is stainless steel returns with a lit acrylic face (sometimes sold as "stainless channel letters"), which gives a metal look by day and bright letters at night.
Mounting: flush, raceway or wireway
Channel letters are fixed in one of three ways: directly to the wall (flush mount), on a raceway (a box behind the letters that holds the wiring and drivers), or on a wireway (a slimmer box for wires only). Flush mounting looks cleanest; raceways need fewer holes in the wall and make servicing easier.
Flush (direct) mount. Each letter is fixed straight to the fascia with studs or brackets, and wires pass through the wall behind each letter to drivers inside. It's the neatest look and the most common for front-lit letters, but it needs the most holes in the wall (SignShop) and access behind the fascia for the drivers.
Raceway. The letters sit on a rectangular aluminium box, painted to match the wall, which holds the drivers and wiring. It needs fewer holes in the wall, and servicing is simpler because only the raceway cover needs to come off. It's the right choice when you can't get behind the wall, when a landlord limits drilling, or when a sign may be moved later. The downside is a visible bar behind the letters.
Wireway. A slimmer aluminium channel that carries only the wires and acts as a mounting rail and backing. The drivers usually sit inside the building. It sticks out less than a raceway, but a failed component can mean removing the sign (SignShop).
Fixing to ACP fascias and cladding
Many Dubai shop fronts have aluminium composite panel (ACP) fascias. ACP is only 4 mm thick, so letters shouldn't be fixed to the panel alone. We fix through the panel into the steel or aluminium frame behind it, or add a backing plate, and we seal every hole so water doesn't get behind the cladding. If your fascia needs replacing too, see our ACP facade service.
Channel letters and Dubai's sign rules
Any exterior business sign in Dubai needs a permit, and in 2026 Dubai introduced new rules for shopfront trade-name signs. As reported by Gulf News and Khaleej Times, they require one trade name per shop, Arabic above English, horizontal and static signs, controlled brightness, and no bright white backgrounds.
Channel letters fit these rules well: individual lit letters on a dark or neutral fascia are exactly the kind of sign the rules favour over old white light boxes. Points to watch:
- The Arabic and English names must match your trade licence.
- The sign must stay within the fascia area approved for your unit, and projecting signs are limited.
- Flashing or animated lighting isn't allowed on trade-name signs.
- Mall units also need the mall's design approval, which usually sets letter height, lighting type and colour limits.
We prepare the drawings and apply for the permit as part of the job. Full details are in our shop signs guide.
How much do channel letters cost in Dubai?
Channel letters are usually priced per letter, by height and lighting, with installation, raceway and permit added. The ranges below are typical Dubai prices before VAT and are a guide only; your quote is fixed after the survey.
| Type | Guide price | Per |
|---|---|---|
| Non-lit channel letters | AED 150–300 | letter, about 400 mm high |
| Front-lit channel letters | AED 220–450 | letter, about 400 mm high |
| Halo-lit channel letters | AED 280–550 | letter, about 400 mm high |
| Front and halo lit | AED 350–700 | letter, about 400 mm high |
| Raceway | AED 150–300 | metre |
| Typical shop sign, English and Arabic, front-lit, installed | AED 5,000–15,000 | complete sign |
For comparison, a US manufacturer's 2026 guide puts a typical storefront channel letter sign at USD 800 to 4,000, with halo and combination letters at the top of the range (ChannelLetter.com). Dubai prices aren't directly comparable because labour, materials and permits differ, but the ranking of types is the same.
What changes the price
- Letter height and count. Price rises faster than height: a letter twice as tall has twice the return length, four times the face area and more LEDs.
- Lighting type. Halo and combination letters take more work than front-lit, and need stand-offs and a suitable wall.
- Arabic and logo complexity. Connected Arabic words and detailed logos take longer to bend and light than simple block capitals.
- Trimless construction. Costs a little more than trim cap.
- Finishes. Mirror coil, sprayed colours, printed faces and day/night vinyl add cost.
- Mounting. A raceway adds material but can save wall work; high or awkward sites may need a boom lift or scaffold.
- Permits and approvals. Shown separately on our quote.
What's included in our quote
A free site survey, design and a true-scale mockup, fabrication with around 1 mm coil and named-brand LEDs, outdoor-rated drivers, installation with fixings to suit your wall, connection to a power point you provide, a timer on request, and a 1-year warranty on workmanship, LEDs and drivers. We'll list anything else, such as permit fees, electrical work or access equipment, on the quote.
Ways to spend less
- Make the main name channel letters and the tagline flat-cut acrylic.
- Choose front-lit over halo for a street fascia where distance matters more than style.
- Use a raceway if the wall is hard to get behind, instead of opening the fascia.
- Keep existing sound fascia panels and replace only the letters.
How to compare channel letter quotes
Quotes for the same sign can differ by half or more, and the cheapest one usually saves money on parts you can't see. Before you choose, ask each supplier the same questions:
- Coil thickness. Is the return coil around 1 mm, or thinner? Thin coil dents and ripples.
- LED and driver brand. Are they named, outdoor-rated brands, and what's the warranty on each?
- Letter depth. Is it deep enough for even light at your letter size, or will you see dots?
- Face material. Opal acrylic of what thickness? Is the colour vinyl made for lit signs?
- Drainage and sealing. Are there drain holes with light baffles, and how is the back fixed?
- Driver location. Can a driver be replaced without taking the sign down?
- What's excluded. Permit fees, electrical work to the fascia, access equipment, and removal of the old sign.
- Mockup. Will you see a true-scale drawing, with Arabic and English, before anything is made?
A supplier who answers these clearly is usually the one whose sign still looks right in five years.
Lifespan, maintenance and repairs
A well-made channel letter sign should last 10 years or more, and good LED modules are rated for tens of thousands of hours; one manufacturer quotes 50,000 hours or more (ChannelLetter.com). In Dubai, heat and dust shorten the life of weak parts, so what fails first is usually a cheap driver, a failed seal or a single LED chain.
Signs of trouble to look out for:
- One letter dark or dim. Usually a failed LED chain or a loose connection. It's a quick repair.
- Whole sign off. Usually the driver, the timer or the power supply to the sign.
- Flickering. Often a driver near the end of its life or overloaded.
- Patchy colour. Faded vinyl, or LEDs of different ages after a partial repair.
- Dust or dead insects inside. A gap in the seal or a missing drain baffle.
A simple maintenance plan keeps a sign looking new:
- Clean the faces every few months with mild soap and water, not glass cleaner or solvents, which can crack acrylic.
- Check after the summer for any letters that have gone dark, and for loose trim or faces.
- Inspect drivers, seals and fixings once a year.
- Replace vinyl when it starts to fade, usually after several years in direct sun.
We offer maintenance visits and repairs, including signs we didn't make. We keep records of the LEDs and colours we use, so a replacement letter matches the rest.
How we make and install them
- Survey. We measure the fascia, check what it's made of, where the power is, and how far away people will read the sign.
- Design and mockup. We prepare a true-scale mockup on a photo of your shop front, with letter heights, depth, lighting and colours marked, plus an itemised price.
- Permit. We prepare the drawings and apply for the permit, and handle mall approval if needed.
- Fabrication. We cut the backs and faces by CNC, bend the returns, fit the LEDs and drivers, and light-test every letter.
- Installation. We fix the letters with a paper template so the spacing is exact, connect the power, and set the timer. Most shop signs go up in a day, often at night for malls.
- Handover. We show you how to switch and time the sign and send you photos, colours and LED details for your records.
Typical lead time is 6–10 working days after the design is approved, plus the time the permit takes.