Dimensional Letters
Custom Illuminated Dimensional Signs for Businesses
Illuminated dimensional signs are the most effective way to make your business visible after dark. Whether you need custom business signs outdoor for a restaurant, illuminated blade signs for a retail store, or lighted business signs for a hotel, Martin Sign builds commercial-grade illuminated signage that performs for years.
I'm [Owner Name] from Martin Sign. We manufacture illuminated signs for businesses at our 1455 Yosemite Ave, San Francisco, CA 94124 facility. No brokers. No drop-shipping. We build custom exterior signs in-house and ship nationwide.
If you're searching for "sign makers near me" or a "sign manufacturer" you can trust, you've found the right sign shop. We are a full-service illuminated sign company specializing in signage illuminated for commercial applications.
WHAT ARE ILLUMINATED DIMENSIONAL SIGNS?
Illuminated dimensional signs (also called channel letters or LED dimensional signs) are individual 3D letters, logos, or shapes with internal LED lighting. Unlike flat signs or non-illuminated letters, these signs glow at night, making your business visible 24/7.
Common names for this product:
- Channel letters
- Illuminated dimensional letters
- LED business signs
- Lighted storefront signs
- Exterior illuminated signage
- Front lit or halo lit letters
Why businesses choose illuminated dimensional signs:
| Benefit | Why it Matters | ||
|---|---|---|---|
| 24/7 visibility | Your business is visible after dark | ||
| Professional appearance | Looks established and permanent | ||
| Energy efficient | LEDs use 80% less energy than neon | ||
| Long lifespan | 50,000+ hours (11+ years of night use) | ||
| Customizable | Any font, color, size, or logo shape | ||
| Weather resistant | Built for outdoor exposure |
TYPES OF ILLUMINATED DIMENSIONAL SIGNS
Front Lit Channel Letters
LEDs shine forward through colored or translucent acrylic faces. Bright, bold, highly visible from a distance.
Best for: restaurants, retail stores, strip malls, gas stations
Halo Lit (Backlit) Channel Letters
LEDs shine backward onto the wall, creating a soft "halo" glow around dark metal letters. Premium, sophisticated appearance.
Best for: hotels, law firms, banks, luxury retail, corporate offices
Open Face Illuminated Letters
Letters have clear acrylic faces with exposed bulbs or LEDs visible. Retro, vintage appearance (classic theater or diner look).
Best for: historic buildings, theaters, bars, vintage-themed businesses
Combination Lit Letters
Letters with both front and back illumination. Front lit face with halo glow on the wall. Maximum visual impact.
Best for: flagship stores, casinos, entertainment venues, high-traffic locations
BENEFITS OF CUSTOM BUSINESS SIGNS OUTDOOR
| Benefit | Explanation | ||
|---|---|---|---|
| Increased foot traffic | Illuminated signs attract attention from sidewalks and streets | ||
| Brand recognition | Custom fonts and colors reinforce your brand identity | ||
| Low maintenance | LEDs rarely fail; no bulbs to replace | ||
| Energy efficient | Typical sign uses 30-60 watts (pennies per day) | ||
| Permitting friendly | Channel letters are standard in most zoning codes | ||
| Year-round performance | Built for heat, cold, rain, snow, and humidity |
BEST MATERIALS FOR ILLUMINATED DIMENSIONAL SIGNS
Aluminum Returns and Backs (Standard)
Commercial-grade aluminum (0.040" to 0.063" thickness) is lightweight, rustproof, and durable. Powder-coated in any color. Standard for 95% of illuminated channel letters.
Best for: most exterior installations, retail storefronts, restaurants
Stainless Steel Letters
Premium 304 or 316 stainless steel for maximum durability and high-end appearance. Brushed or polished finish. Used for halo lit letters or coastal locations.
Best for: luxury brands, hotels, coastal properties (salt air resistance)
Acrylic Faces (Front Lit)
Translucent or colored acrylic allows LED light to shine through. Available in dozens of colors. Can be digitally printed with logos or graphics.
Best for: front lit channel letters, custom color matching
Polycarbonate Faces (Impact Resistant)
Stronger than acrylic with similar light transmission. Used for ground-level signs at risk of vandalism or ball impact.
Best for: gas stations, convenience stores, ground-level installations
LED LIGHTING SPECIFICATIONS
| Specification | Our Standard | ||
|---|---|---|---|
| LED type | SMD 2835 or 5050 (commercial grade) | ||
| Color temperature | 3000K (warm white), 4000K (neutral), 5000K (cool white) | ||
| Ingress Protection | IP65 (dust-tight + rainproof) or IP68 (submersible) | ||
| Rated life | 50,000 to 100,000 hours | ||
| Voltage | 12V or 24V DC (low voltage, safe for outdoor wiring) | ||
| Warranty | 5-year LED warranty (we replace failed components) | ||
| Power supply | UL-listed transformer included |
CUSTOMIZATION OPTIONS FOR ILLUMINATED DIMENSIONAL SIGNS
Every sign is custom fabricated to your brand specifications.
| Feature | Options | ||
|---|---|---|---|
| Font | Any font (Times New Roman, Arial, Gotham, custom logos, script fonts, etc.) | ||
| Letter height | 4" to 60" tall (larger available on request) | ||
| Letter depth | 3" to 8" deep (standard is 5" depth for exterior) | ||
| Material | Aluminum, stainless steel, acrylic, polycarbonate | ||
| Lighting type | Front lit, halo lit (backlit), open face, combination | ||
| LED color | Warm white, neutral white, cool white, RGB, single colors | ||
| Face color | Any PMS color, translucent, opaque, digitally printed | ||
| Return color | Any powder-coated color (letter sides and back) | ||
| Mounting | Raceway (hidden box), direct mount (flush to wall), trimless |
HOW ILLUMINATED DIMENSIONAL SIGNS ARE MADE
INDUSTRIES THAT USE ILLUMINATED DIMENSIONAL SIGNS
| Industry | Typical Application | ||
|---|---|---|---|
| Restaurants | Storefront name, "OPEN" signs, logo lettering | ||
| Retail stores | Exterior branding, window signage, entrance identification | ||
| Hotels & hospitality | Exterior building signs, lobby logos, amenity signage | ||
| Medical offices | Building identification, after-hours visibility | ||
| Salons & spas | Storefront illuminated signage, open signs | ||
| Bars & pubs | Illuminated blade signs, corner building signs | ||
| Gas stations & convenience | High-visibility pylon signs, canopy lettering | ||
| Corporate offices | Building monument signs, lobby logos | ||
| Banks & credit unions | Drive-through signs, exterior building ID | ||
| Auto dealerships | Large format illuminated lettering on buildings |
FRONT LIT VS HALO LIT VS OPEN FACE
| Feature | Front Lit | Halo Lit (Backlit) | Open Face |
|---|---|---|---|
| Brightness | Very bright | Moderate glow | Very bright |
| Viewing distance | Long distance (300+ ft) | Medium distance (150 ft) | Long distance |
| Appearance | Bold, direct | Premium, sophisticated | Vintage, retro |
| Maintenance | Low | Low | Medium (exposed LEDs) |
| Best for | High traffic, highways | Luxury brands, hotels | Theaters, historic |
Exterior Storefront Signs
If you need a sign that projects outward from your building wall — visible from both directions of foot traffic — explore Exterior Illuminated Blade Signs . These are also called projecting signs or hanging signs. Choose from front lit, halo lit (backlit) , or double-sided options. Perfect for restaurants, bars, and retail stores on busy sidewalks.
For businesses that close before dark and want a professional daytime appearance without electricity costs, Non Illuminated Dimensional Letters are the answer. These solid 3D letters require no LEDs, no transformers, and no electrician. Available in acrylic, aluminum, stainless steel, and PVC. They last 10-20 years outdoors.
For premium halo lit and reverse channel letters with a soft glow behind each letter, visit LED Dimensional Letters . This is our premium line for luxury retail, hotels, and corporate offices where sophisticated appearance matters.
If you need a sign that hangs perpendicular to your wall in a square or rectangular shape, explore Outdoor Hanging Signs . These are popular for boutiques, cafes, salons, and office buildings. Available illuminated or non-illuminated, single-sided or double-sided.
Faux Neon & LED Flex Signs
Want the look of vintage glass neon without the fragility? Faux Neon Signs use flexible LED neon flex tubing to mimic traditional neon glow while being energy efficient, cool to the touch, and shatterproof.
Perfect for storefront logos, restaurant branding (think "OPEN" or "PIZZA"), gaming rooms, wedding signs (names and dates), bars and lounges, salons, and social media backdrops. Available in RGB color-changing, warm white (3000K), cool white (5000K), pink, blue, red, purple, and custom colors. Indoor and outdoor rated options available.
Custom Business Banners
Need something temporary, affordable, and fast? Custom Business Banners are perfect for sales, grand openings, events, trade shows, and seasonal promotions.
We print vinyl banners (13oz to 18oz, weather-resistant), mesh banners (wind-resistant for fences and construction sites), retractable banners (portable trade show displays that set up in 60 seconds), and hanging banners (for shopping centers and retail stores). Features include UV-resistant inks, reinforced hems, grommets every 18-24 inches, pole pockets, and wind slits for windy locations.
WHY CHOOSE MARTIN SIGN AS YOUR ILLUMINATED SIGN COMPANY
REAL PROJECT EXAMPLES
Project 1: Phonix — San Francisco, CA
| Details | Information | ||
|---|---|---|---|
| Sign type | Front lit channel letters | ||
| Letter height | 18" | ||
| LED color | 4000K neutral white | ||
| Mounting | Raceway mount on brick | ||
| Result | Restaurant reports increased evening walk-ins |
Frequently Asked Questions
Dimensional letters are solid, non-illuminated 3D letters. Channel letters are hollow with internal LED lighting. This page covers illuminated channel letters specifically.
Typical range: 1,500to5,000+ depending on number of letters, letter height, lighting type (halo lit costs more), and mounting method. Contact sales@martinsignco.com for a custom quote.
LEDs: 50,000+ hours (11+ years at 12 hours/night). Aluminum letters: 15-20+ years. Acrylic faces: 7-10 years before yellowing.
Yes. A typical channel letter sign uses 30-60 watts total — less than a household light bulb. LEDs use 80-90% less energy than neon.
Yes. We can match any font file (TTF, OTF) or vectorize your logo. Custom logos and script fonts are our specialty.
Front lit— LEDs shine through colored acrylic faces. Bright, bold, visible from far away. Halo lit— LEDs shine backward onto the wall. Soft glow, premium appearance, visible from medium distance.
Most U.S. cities require an electrical and building permit for illuminated signs. We provide engineering drawings and electrical specs for your permit application.
We provide installation templates, hardware, and phone support. For full installation, we can refer licensed sign installers in most major U.S. cities.
7-14 business days after final approval and 50% deposit. Rush available for 30% upcharge (5-7 business days).
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