Keystone Sign Service

Keystone Sign Service UL approved lighted signs - designed and manufactured, installation, repair, sales and service.
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Keystone Sign Service is a full service sign company located in the Greater Harrisburg area of Carlisle PA, specializing in wholesale manufacturing of signs and installation of lighted signs, channel letters, awnings and neon signs.

Having fun doing what we do best! We are currently looking for a sign installer to join our team. If you’re agile, don...
08/21/2026

Having fun doing what we do best! We are currently looking for a sign installer to join our team. If you’re agile, don’t mind heights or tight spaces, have a good attitude and work ethic, give us a call!

Out here with 2 trailer loads of signs! 💪🏽
08/21/2026

Out here with 2 trailer loads of signs! 💪🏽

New interior wall sign is up for Merit Financial Advisors 😍1/2” painted acrylic with brushed aluminum laminate overlay
08/13/2026

New interior wall sign is up for Merit Financial Advisors 😍

1/2” painted acrylic with brushed aluminum laminate overlay

The face you make when you’re only 5’ tall and get asked to carry the 6’x12’ sheet of polycarb 🙈
08/12/2026

The face you make when you’re only 5’ tall and get asked to carry the 6’x12’ sheet of polycarb 🙈

The sign is officially up for Doug's Boutique! From start to finish, this job was seamless. Doug knew exactly what he ...
08/12/2026

The sign is officially up for Doug's Boutique!

From start to finish, this job was seamless. Doug knew exactly what he wanted and how he wanted his sign to look. He sent the proper files and communicated clearly from the beginning. From our initial conversation to permit submission, less than 2 weeks.

Stop by in person to check it out and while you’re there, be sure to walk inside….. you will be AMAZED!

He didn’t have to double check the spelling of this sign 😂😂😂It was a great time installing this sign for Doug's Boutique
08/05/2026

He didn’t have to double check the spelling of this sign 😂😂😂

It was a great time installing this sign for Doug's Boutique

9 hours and a lot of windows laterWe got it done! 💪🏽
08/04/2026

9 hours and a lot of windows later
We got it done! 💪🏽

New LED border is up for Arby’s 😍
07/29/2026

New LED border is up for Arby’s 😍

The only reason we bought this fan was because we got a free t shirt 😂If you are looking for a large shop fan, we cannot...
07/28/2026

The only reason we bought this fan was because we got a free t shirt 😂

If you are looking for a large shop fan, we cannot suggest Humongous Fans enough. They helped us every step of the way and we couldn’t be happier!

We have been keeping a secret 🙈🤩🙈A few months ago we purchased 2 billboards! Both spaces are available for rent! One b...
07/27/2026

We have been keeping a secret 🙈🤩🙈

A few months ago we purchased 2 billboards! Both spaces are available for rent!

One billboard is on the Holly pike and has nighttime illumination. The other is just south of the Twirly Top and does not have illumination.

Give us a call for pricing and availability! 💪🏽
717-486-5381
800-382-2592

Address

406 N Baltimore Avenue
Mount Holly Springs, PA
17065

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+17174865381

Website

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