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Changeable Sign Letters

Changeable Sign Letters – Flex & Rigid Options

Transform your message instantly with professional Gemini changeable sign letters! Perfect for businesses, schools & churches needing flexible outdoor signage. Get durable, weatherproof letters with easy installation. Order now for fast shipping and keep your signs fresh!


See Frequently Asked Questions below. Click Here to view the differences between Flexible and Rigid Sign Letters.

SignOutfitters.com is an Authorized Reseller of Gemini Products.
Gemini Sign Letters
Gemini rigid sign letters are precision-molded from .080" acrylic, making them durable, scratch-resistant, and weatherproof. Perfect for business signage, marquees, and theaters, these non-flexible letters are available in 4", 6", 8", and 10" sizes.
Portable Sign Letters
Need replacement letters for your portable sign? Our flexible changeable sign letters fit Flex Letter Track or Texas Track only. Available in 4", 6", 8", and 10" sizes, with black letters, red numbers, and Block or Condensed fonts. Sold in sets only.
Gemini Pronto Letter Changing Pole
Gemini Letter Changing Poles extend from 6ft to 18ft, making sign updates effortless. Built from durable fiberglass, they include a 3 3/4'' suction cup for secure letter handling. Perfect for businesses, churches, and schools using rigid sign letters.
Portable Sign Track
Flexible Sign Letter Track and Replacement faces for .030 Flex Change Letters and SS Signs Brand Portable Signs.
Rigid Sign Letter Track
Rigid Sign Letter Track for Gemini Pronto and Wagner Zip Change Letters.

Frequently Asked Questions (FAQs)

How do I measure my sign letters for replacement?

Letter sizes are based on the printed character height. For example, a 4" letter is printed on a 5" plastic panel (often called 4-on-5).

What size lettering will fit my space?

It depends on your sign width and the distance between the tracks. Common letter heights are 4", 6", 8", and 10". If you’re unsure, contact us and we’ll help you size it correctly.

What’s the difference between rigid and flexible sign letters?

Rigid letters change using a push-up/drop-down method. Flexible letters bend slightly and snap into place. See the key differences here: Flexible vs. Rigid Sign Letters.

Can I mix rigid and flexible letters on my sign?

No. Rigid letters won’t work in flex tracks, and flex letters won’t work in rigid tracks. Confirm your track type before ordering.

Are these letters weatherproof?

Yes. Our letters are made from durable plastics that stand up to sun, rain, and wind—they’re designed for outdoor use.

How many letters will fit on a line?

Capacity depends on your letter height and usable line width. Smaller letters fit more per line, and some characters (e.g., “I”) are narrower while others (e.g., “W”) are wider. If you share your track width, we can estimate characters-per-line for your layout.

Upgrade Your Signage Today!

With over 20 years of experience, SignOutfitters.com is your trusted source for high-quality replacement sign letters. Whether you're refreshing an outdoor business sign or updating a school marquee, we've got the durable, high-visibility solutions you need.