Cell-Stone® provides acid proof and alkali resistant RTO media for VOC destruction devices for new and aftermarket devices.   

The engineers of Cell-Stone® have been manufacturing heat recovery media since 1995.  

As engineers, we are the only heat recovery media manufacturers/suppliers that have designed and built an impressive 400+ RTO units globally, in a

40 year time span.

Because of the pivotal role we play in your business, Cell-Stone® LLC is committed to creating and maintaining strong relationships with our customers, built on a foundation of excellence, trust and compliance.

From the site-specific products we manufacture, to our dedicated customer service and support, we know what’s important to you.  

Engineers with actual RTO experience

Random Packed Saddle Media

Cell-Stone's® unique patented ULTRA® is designed to replace 25mm saddles and stave off RTO plugging issues.  Ultra®

 delivers lowest pressure drop, highest heat recovery.  Reduced pressure delivers horsepower savings.

Richard Greco, President



Paul Stefanic, Agent



Gina Sanvenero, Agent



Technical Information

Your goals are our goals. 

Our random packed and monolith media meets or exceeds ASTM standards with regard to chemical composition and crushing strength.

​Cell-Stone's® random packed media is guaranteed for 2 years against thermal decomposition.

Our random packed media is press manufactured.  Unlike inferior extruded media, each individual saddle is pressed for identical size, shape and weight; made with superior quality and delivers 25% more crushing strength.  

Exceeds Industry Standards 

Random Media Specifications 

Cell-Stone® offers a choice:  

  • Acid resistant, standard duty chemical stoneware.
  • Severe duty and alkali resistant, high alumina, Porcelain.


Ceramic Monolith 

Ultra® Low Pressure Saddle Media

Cell-Stone® offers these 

cells-per-inch choices:

  • 25 x 25 CPI
  • 43 x 43 CPI

Call or email

Monolith Pressure Drop 



Manufacturer and Supplier of Heat Recovery Media Solutions for RTO's

Cell-Stone® uses Super-Sacks to transfer ceramic random saddles for on-site installation ease.

Cell-Stone® LLC, Manufacturers and Suppliers of Heat Recovery Media Solutions for RTO's.

Cell-Stone® engineers work with your engineering team in optimizing the plant's overall RTO performance.  With decades of RTO experience, we specialize in air pollution control solutions for these unique core industry sectors:

  • Wood and Lumber
  • Printing
  • Wastewater
  • Fertilizer
  • Chemical
  • Petro-Chemical