What the number actually measures
A recycled-content percentage tells you the share of fiber in a board that came from recovered paper rather than fresh pulp. That is genuinely useful information, and higher is generally better. But it is a statement about materials, not about impact.
A box can be truthfully labeled "100% recycled" and still have required a full run through a mill — pulping, forming and the energy-hungry drying step — to exist. The label says nothing about whether that production was avoidable.
Pre-consumer versus post-consumer
Not all recycled content is equal. Post-consumer fiber is material that did a job and came back — the old boxes you and I put out for collection. Pre-consumer (or "post-industrial") fiber is factory offcuts and trim that never left the supply chain.
Both count toward a recycled-content figure, but post-consumer content represents the harder, more meaningful loop. A high number built mostly from pre-consumer trim is less impressive than it sounds, so it is always worth asking for the split.
The energy behind the fiber
Recycling avoids some of the harvesting and chemical pulping of virgin production, which is real and valuable. What it does not avoid is re-forming and re-drying the sheet — the most energy-intensive part of making board.
That is why a mill’s fuel mix can matter as much as its recycled percentage. Recycled content lowers the footprint of manufacturing; it does not remove the manufacturing.
“Recycled fiber still has to be dried, and drying is where the carbon goes.”
How to read a claim honestly
None of this is an argument against recycled content. It is an argument against treating it as the finish line. The most sustainable outcome is not a greener new box — it is not needing a new box at all.
- Ask for the post-consumer share, not just the total recycled percentage.
- Ask whether the mill’s energy comes from renewables, biomass or fossil fuels.
- Treat "recyclable" and "recycled" as different words — one is a hope, the other is a fact.
- Remember that reuse outranks both on the waste hierarchy.
The claim we would rather make
We would take a reused box with zero recycled-content marketing over a brand-new "100% recycled" box any day, because reuse is the only path that avoids production entirely.
So when you evaluate a supplier’s green credentials, look past the percentage on the label and ask the real question: how many times will this box be used before anyone makes another one?