Changeable Letters

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Allen Sign Company manufactures various sign components and lettering products that you can use to complete your signage projects.  All products in this category are manufactured using the finest materials available, utilizing state-of-the-art equipment to produce high quality items for you.  From our world reknowned Gem™Trim that does not crack, peel, or delaminate, to our Pronto Changeable Copy letters that are screened on 100% injection molded precision blanks, we produce outstanding, durable quality sign components that are suitable for indoor or outdoor applications.

Gem Trim letters and logos are made by chemically bonding Gem Trim to a 3/16” thick router-cut acrylic.  Gem Trim letters can be made with either the ¾” or 1” standard trim width.  **Not all colors are available in ¾” trim.**

Gem™ Trim• Guaranteed not to delaminate, crack or fade

For Neon or LED letters• Meets all UL codes for sign letters

Gem Trim material is Cellulose Acetate Butyrate (CAB), extruded around aluminum foil.

Custom colors and lengths are available; call us for a quote.


Don't see what you are looking for? Allen Sign Company can meet your Changeable Letters Sign Systems needs. Visit our custom design page for more details, email us at This email address is being protected from spambots. You need JavaScript enabled to view it. or call us at 1-800-844-3524 or 1-865-573-3524. 

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Contact us

Contact Us

South Store
2408 Chapman Highway
Knoxville, TN 379201

(865) 573-3524

West Store
8403 Kingston Pike
Knoxville, TN 37920

(865) 558-3523

This email address is being protected from spambots. You need JavaScript enabled to view it.