A value sheet you can depend on.

Protect your products by using FlatStack sheets as:

  • Top covers on pallets
  • Liners on pallets
  • Tier sheets between product layers to improve pallet cube integrity


  • Engineered for consistent performance on automated palletizers 
  • Designed specifically for this application
  • In-house design and testing capabilities offered

Compared to corrugated sheet:

  • Minimum 5% reduction in weight
  • Minimum 15% material cost savings
  • Lower freight costs—over two times more sheets shipped per truckload
  • Store five times the amount of sheets per unit of storage

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pallet of paper

FlatStack® Tier Sheets

  Sheets per Pallet Pallets per Truckload Sheets per Truckload
Corrugate C-Flute 150pt  320  56 17,920
Corrugate B-Flute 120pt  400  56 22,400
FlatStack 24pt 2,000  21 42,000
FlatStack 30pt 1,600  21  33,600

Assuming 40"W x 48"L x 48"H

examples of cardboard types
  • Features

    Calipers: 17-45pt
    Design flexibility: square, round or custom corners and/or sizes
    Custom die-cut designs available

  • Sustainability

    Made with 100% recycled fiber
    Minimum 85% post-consumer fibers
    Acceptable in commercial OCC recycling programs
    FSC certification is available (see below)

See the difference.

One pallet of FlatStack tier sheets yields 266 pallet cubes; one pallet of corrugated tier sheets yields only 53 pallet cubes.


image of cubes stacked

FlatStack Ultralight®: Sonoco's Lightweight Value Offering

As a value-priced alternative to lightweight gypsum and paperboard sheets, FlatStack Ultralight® delivers exceptional performance, consistency in quality, and security of supply. When you use FlatStack Ultralight, you’ll know that you can get the quality tier sheet you need, when you need it – for a value price. 


  • Engineered for consistent performance on automated palletizers
  • Engineered and manufactured specifically for this application
  • Technical support for implementation, including process modeling
  • Recyclable


Sheets per Pallet

Sheets per Truckload







Assuming 40"W x 48"L sheet size, 22 pallets per truckload.

Locations across North America ensure quick and efficient delivery.

Sonoco Flatstack Locations Map


All but two of our 23 global paperboard mills use 100% recycled fibers in their production. Sonoco is committed to responsible use of natural resources through responsible sourcing, recycling, and use of recycled fiber in our paper-based packaging. Sonoco's mills throughout Europe, the U.S., Canada, Brazil, China, and Mexico (Atizapan), are certified to one or more fiber certification programs. These are: the Forest Stewardship Council® (FSC®), Sustainable Forest Initiative® (SFI®) and the Program for the Endorsement of Forest Certification® (PEFC®) Chain of Custody and Due Diligence System Standards.


logo of forest sustainability companies

See what Sonoco can do for your business.

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