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January 26, 2021

What are Gemini Letters?

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There is one form of signage that adorns many of your favorite shops and businesses: Gemini letters. Big and bold and sporting a bit of dimensionality, Gemini lettering adorn Starbucks, Little Caesars, Subway and just about every other business big and small. Gemini letter signage–also known as dimensional letters and channel letters–comes in a variety of styles that would make any business stand out. In expert hands, Gemini letters can make your business's vision come true.

Due to the flexibility of this form of signage, it is good to get familiarized with the parts and types of Gemini lettering available to you.

Parts of a Gemini Letters Sign

There are a few parts that make up a good Gemini letters sign. Some of these parts are quintessential to a Gemini sign but depending on the style and wanted aesthetic, some of these parts can be left out.


The face of a Gemini or channel sign is the part your customers will see. Usually fabricated with a thick sheet of acrylic that is cut into shape by a CNC machine, it can be cut into just about any shape and display a variety of colors.

Trim Camp

The trim cap is a mechanism that attaches the acrylic letters to the body of your sign, known as a channel letter, hence its alternative name.


The return is the side of the Gemini lettering channel. The return's thickness is what gives the letters their dimension. A sign's return can vary, usually being three to five inches created with bent and colored aluminum sheets, the return of your signage is what makes it stand out, quite literally.


The back is just as describes and fabricated using aluminum sheeting that is router-cut. The thickness of the back can be manufactured in a variety of thicknesses.

Light Source

A great feature of Gemini signage is its ability to be illuminated. Due to their thick but hollow design, LED lights can line the inside along with electrical wiring being housed within. LED lights are far more energy-efficient than neon lights, making them a cost-effective way to have a lit business sign.

Types of Gemini Signs

There are several types of Gemini letter signs available.


This is the most common type of Gemini signage. Utilizing all the standard parts mentioned above, a front-lit sign can be customized to your liking.

Back Lit

A backlit channel uses a few different parts, such as a polycarbonate or Lexan back, and metal faces, to create a uniquely illuminated sign. These signs are also known as halo channel letters due to the halo effect that the lighting has.

Envision Orlando

As a local sign business and approved vendor of Orange County Public Schools, Orange County, the City of Orlando, and the City of Winter Park (among others), we’re nimble enough to turn on a dime and deliver best-in-class products in rapid order. With Envision Orlando already registered as a vendor for most government agencies, this means we can act at a moment’s notice.

We offer free consultations, quotes, and designs on school signs to any public school, private school, or district in the state of Florida. Contact the sign specialists at Envision Orlando now at [email protected] or (407) 951-5532

Welcome to Envision Orlando! We are a full-service sign and graphics company in Orlando, FL. We design, print, and fabricate custom signage for businesses. We are your growth partners, and our sign makers are dedicated to helping your business grow.

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