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Flat rate shipping is meant to be simple. With our flat rate pad sets, you can utilize the regional and flat rate services offered by certain carriers.

Your customers love flat rate shipping, and so do you. We offer pad sets to fit most flat rate and regional rate boxes. They are offered in both Classic and Blue, all utilizing R.N.C.’s industry leading insulation.


Typical Profiles
  • Refrigerated – 2-8 Degrees C
  • Frozen
  • Ambient

Most USPS Priority Flat Rate Boxes

Pad Thickness


Classic or Blue

All sizes are offered in both Classic and Blue


Insulation sets will not crack or break with rough handling from parcel carriers


You can acquire the matching boxes from the carrier. R.N.C. does not distribute any of the flat rate or regional boxes.

  • More than 25 years of experience in Cold Chain Shipping to help you find the solution to fit your needs

  • Our customers have over 99% success rate with our validated solutions.

  • Trusted for mission critical pharmaceutical applications.

Superior Insulation

Superior Insulation

Compact Shipment

Compact Shipment

Easy to Assemble