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Custom Building Sign Letters & Outdoor Business Signage

Sign letters for building walls and outdoor business signs are guaranteed not to fade in color, break or get brittle by a company with over 50 years in business. We offer a lifetime guarantee on Gemini sign letters! These USA made sign letters can be custom made in plastic building letters, metal letters or acrylic letters, large or small. The building sign letters are for outdoor business signage, exterior address numbers, interior lobby wall letters or office signs.

Plastic Sign Letters

Shop custom formed plastic sign letters for exterior business walls. Durable 3D letters in 30 colors. Lifetime guarantee against fading or breaking. Design your plastic sign online today ...

Cast Metal Letters

Shop custom cast metal sign letters in aluminum and bronze for permanent outdoor signage. Lifetime guarantee on all architectural metal wall letters. Fast production & free shipping on orders over $30 ...

Metal Letters for Signs

Shop custom flat cut metal sign letters in aluminum, bronze, and brass. Precision waterjet & laser cut for any font or logo. Lifetime guarantee on all exterior metal wall letters. Fast production & fr ...

Acrylic Sign Letters

Shop custom laser cut acrylic sign letters in 30 colors and 4 thicknesses. Durable, UV-resistant 3D plastic letters for indoor and outdoor business signs. Lifetime guarantee & fast shipping! ...

Minnesota Injection Molded Letters

Shop Gemini Minnesota letters. Premium injection molded plastic sign letters with the look of cast metal. Durable, 45 colors, 3 font styles. Lifetime guarantee & 3-day shipping! ...

Building Address Numbers

Shop custom building address numbers for commercial businesses and residential homes. Large plastic, metal, and acrylic numbers in any font. Reflective, polished, and painted finishes. Lifetime guaran ...

Interior Lobby Letters

Shop custom reception wall letters and interior lobby signs. High-quality laminated foam letters for professional office branding. Durable, lightweight, and easy to install. Lifetime guarantee & 4-day ...

Custom Metal Plaques

Custom plaques for commemorative dedications & memorials are made with bronze, aluminum or brass and can be customized with your text or graphics. ...

PVC Plastic Sign Letters

Shop affordable PVC plastic sign letters for indoor displays. Custom painted, lightweight, and fast turnaround. Perfect for temporary office signage or retail displays. Lifetime guarantee & fast shipp ...

Illuminated Sign Letters

Shop custom illuminated sign letters for business storefronts. Energy-efficient LED channel letters in Face Lit and Halo Lit styles. Durable, weather-resistant, and guaranteed for life. Fast shipping! ...

Changeable Sign Letters

Changeable sign letters are sold individually or in kits. Categories include Pronto, zip change, flex change, letter board letters, menu board, and metal church letters.

Vinyl Lettering

Vinyl lettering easy to apply design tool to view all available fonts and colors, then calculate your dimensions and see your vinyl signage pricing online.

Letter Board Letters for Felt Boards

Letter board letters of commercial grade have precision molded tabs to firmly grip felt letter board surface in three styles, Helvetica, Roman and Universal.

Sidewalk Letter Kits

Alphabet Signs has sidewalk sign letter kits for sandwich boards in all sizes and colors for Magic Master, Stop Look, and Signicade.

We guarantee Gemini sign products for life. This means that if any exterior rated letter, logo, or plaque ever fades or breaks, we will replace it at no cost to you. Guaranteed.

~ Alphabet Signs

plastic acrylic house number blue 21

What is better, plastic building letters or metal building letters?

Metal letters provide a strong, permanent image but are more expensive. Plastic dimensional letters have a smooth, shiny surface and are less expensive. Metal letters are heavier, durable, and have a rich texture. Plastic letters are lightweight, economical, and are quicker to produce. Either way, each type of letter comes with a lifetime guarantee.

storefront sign letters that say white dress

What is the difference between plastic building letters and acrylic building letters?

The plastic building letters are a 3D letter that is vacuum formed around molds. The acrylic letters are cut out from a sheet of solid acrylic by a computer driven laser. Formed plastic building letters are economical, three dimensional depth and fast turnaround. But formed plastic letters are only available in select font styles and sizes. Flat cut out acrylic sign letters can be cut in any font style and used for logos and graphics.

minnesota letters architectural style

What are Minnesota Injection Molded Letters?

Minnesota letters are premium injection molded plastic letters. They have the look and feel of cast metal letters because of its razor-sharp edges and corners, smooth returns and unblemished letter faces. The molded letters are available in 45 different automotive paint colors. Minnesota sign letters are available in six font styles and a variety of sizes.

foam letters with silver metal laminate face

Can I use foam letters outside?

No, foam letters cannot be used outdoors because birds and insects will peck and eat at the foam. Our foam letters are designed for beautiful reception wall letters and department store signage. Several decades ago a manufacturer tested HDU foam building letters but the letters UV degraded over time and they went out of business.

How do you install building sign letters?

Outdoor building letters are typically glued with stud mount hardware. Thoroughly clean application area of all dirt, tar, and wax. Mark the pattern with a ruled line along the top of letters and down its center. An accurate, computer-generated pattern printed on 60 lb white grid paper that shows the outline of each character, spacing between letters and hand punched hole locations of each stud showing where to drill. Once taped to the wall, holes are then drilled and filled with adhesive.