Keystone Sign Service

Call Directions Website Contact the business

Keystone Sign Service UL approved lighted signs - designed and manufactured, installation, repair, sales and service.
(2)

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.

UPDATE: This is Loki, the neighborhood cat. He is well loved but likes to be indoors AND outdoors. Use caution if you...
10/20/2026

UPDATE: This is Loki, the neighborhood cat. He is well loved but likes to be indoors AND outdoors. Use caution if you are driving through Boiling Springs!

Almost witnessed this cat get hit in Boiling Springs. It looks like a bengal. The way it stood in the road makes me think it’s not an outside cat. Please share incase anyone is missing this cat

10/19/2026

Our security cameras caught my struggles 😂

Whyyyyy do they make these hoods so heavy?!?!
10/19/2026

Whyyyyy do they make these hoods so heavy?!?!

And for today’s lesson…. Teachings in knife safety 101. One should always sheath one’s blade 🙈🙈🙈
10/15/2026

And for today’s lesson…. Teachings in knife safety 101. One should always sheath one’s blade 🙈🙈🙈

Last week we received a call that this billboard had blown down and needed replaced before their homecoming game (less t...
10/14/2026

Last week we received a call that this billboard had blown down and needed replaced before their homecoming game (less than 1 week later)

We manufacture in-house. What does that mean? Faster timelines. Faster turn around. Call us for a free quote 717-486-5381

New signs are up for Misfit Kitchen 🔥🔥🔥Be sure to follow them for updates!
10/13/2026

New signs are up for Misfit Kitchen 🔥🔥🔥

Be sure to follow them for updates!

Lining them up! 💪🏽
10/12/2026

Lining them up! 💪🏽

I just LOVE the detail in a door handle 🙃😬💪🏽
10/12/2026

I just LOVE the detail in a door handle 🙃😬💪🏽

More than a year in the making. Finally making good use of this new facility 😍
10/12/2026

More than a year in the making. Finally making good use of this new facility 😍

We service more than Central PA. If you have an outage, give us a call 717-486-5381
10/09/2026

We service more than Central PA. If you have an outage, give us a call 717-486-5381

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

Alerts

Be the first to know and let us send you an email when Keystone Sign Service posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Keystone Sign Service:

Shortcuts

Share

Category