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Welcome to Keystone Sheets.

Our Promise
Committed to producing the highest quality corrugated sheets with an unsurpassed focus on customer satisfaction while providing opportunity and growth for our employees.
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Keystone Sheets is a proud member of Corrugated Partners Group, and we’re excited of the vast opportunities that affords our employees and customers. Chambersburg, PA has a long history in the corrugated and packaging business, and we believe the combination of world class technology, modern machines, innovations, and values built on respect, recognition, and opportunity give us a tremendous advantage in the market. We operate an ultra-wide 132″ BHS corrugator and offer a wide variety of corrugated sheets in several flute types and liners in singlewall, doublewall, and triplewall configurations with next-day delivery. We are a forward thinking company that keeps a step ahead of the rest!

About Us

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By the numbers

Setting the standard.

Keystone Sheets is the latest sheet feeder member plant of Corrugated Partners Group (CPG). CPG is a collaborative network of sheet feeders, producing more than 20% of the country’s corrugated sheet requirements. We make the materials that form the boxes that carry the necessities of life to businesses, hospitals, pharmacies, and front doors across North America. The 16 sheet feeders that makeup CPG have generated astounding numbers that few in this industry have achieved.
28 +
Billion Sq Ft per year
1200 +
8 Yrs
Average employee tenure
2 +
Million tons of containerboard converted annually
Our values

Setting new heights with outstanding people

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Safety First

Safety is paramount. We invest in modern safety equipment and training.


Value and respect all team members and empower them to make decisions to benefit their teammates and the company.


Strive to find better ways to do things, continuously moving the needle.

Achieving Goals

Work with each team member to help them reach their personal and professional goals.

Family Oriented

Encourage a family atmosphere.

Set the standard

Refuse to accept the status quo and set high standards for ourselves.

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