What is a regular slotted carton?
A regular slotted carton, or RSC, is a corrugated box with four top flaps and four bottom flaps that meet at the center when closed. The format is straightforward to pack, tape, label, stack, and ship. It is a good starting point when the box needs to move through parcel handling without a separate lid or a presentation-style opening.
RSC dimensions are normally written as length x width x depth. Start with the inside space needed by the packed product, then add room for inserts or cushioning. A common planning convention is about 1/16 inch, or 1.5 mm, of dimensional tolerance. The final dieline, which is the flat cutting template used to print and cut the box, must account for board thickness, scores, flaps, and the chosen sealing method.
Which corrugated grade fits an RSC shipment?
E flute is the finer profile, so it suits a compact carton where printed detail and a tighter fold matter. B flute gives a middle ground between surface, cushioning, and stacking. C flute has more depth and is commonly considered when the product needs more cushioning or the case must carry a larger load. These are general packaging references, not automatic grades for every shipment.
| Reference | What it changes | Check before approval |
|---|---|---|
| E flute | Finer profile and cleaner printed surface | Product clearance, fold behavior, and print coverage |
| B flute | Balanced cushioning and stackability | Packed weight, pallet pattern, and closure |
| C flute | More cushioning depth and board thickness | Parcel handling and stacking load |
| 32 ECT | Common edge-crush test reference | Whether the board suits the shipment plan |
32 ECT is a common corrugated strength designation. It does not by itself show that one box will suit every route. Product weight, box size, stacking height, pallet pattern, and exposure to handling all belong in the grade discussion.
Board direction matters too. Corrugation usually runs through the board in one direction, which affects crush behavior, fold response, and how a tall panel carries load. Tell the supplier whether the carton will stand on a pallet, lie flat, or move through parcel networks. That detail belongs beside the flute and 32 ECT reference.
How should an RSC be printed and closed?
Flexographic printing is commonly used for corrugated graphics, marks, and handling information. Digital printing can suit a shorter run or an artwork trial. Decide whether the box needs one-color identification, outside CMYK coverage, inside print, or only a shipping mark. Heavy ink coverage, barcode size, seams, scores, and tape zones should be checked on the digital proof before the run starts.
The RSC normally closes with tape, staples, or another specified sealing method. Type set too close to a score can disappear around the fold, and artwork without bleed can leave a board-colored sliver at the cut edge. If the box needs repeated opening or a retail presentation, compare a mailer or tuck-top format with custom folding cartons before choosing the shipping structure.
What should I send for an RSC quote?
The quote starts with packed length, width, and depth, plus approximate weight and shipping method. Add the target quantity, product orientation, shipping environment, and whether the cartons will be palletized or parcel shipped. Include any divider, pad, window, or insert requirement. If an insert is cut to the exact product size, leave enough clearance for the real item so it does not rattle after packing.
A quote is easier to review when the request separates inside dimensions from outside dimensions and marks the label panels. You can also compare a folding carton format and a printed carton format when the same product needs a presentation pack as well as an outer shipper. The broader custom packaging solutions hub covers other structures. CPL quotes from a 100-unit minimum, with pricing from $0.49 per unit at volume, quoted to spec. Production is typically 8 to 10 business days after proof approval, plus delivery. Free US shipping, free design support, and a free dieline are available, and the $19.99 sample kit is credited toward the first order.
Frequently Asked Questions
What does RSC mean in packaging?
RSC means regular slotted carton. A regular slotted carton is a corrugated box whose four top flaps and four bottom flaps meet at the center when closed. The format is commonly used for shipping because it packs flat, takes tape or staples, and has a predictable panel layout. The board grade still needs to match the product, load, and handling route.
Which flute should I choose for an RSC box?
E flute has a finer profile for compact packs and detailed print, B flute balances cushioning with stackability, and C flute adds more depth for cushioning and load support. The right flute for an RSC box follows product dimensions, packed weight, pallet pattern, closure, and handling conditions. Treat the flute comparison as a planning reference, then confirm the board on the proof.
How are RSC dimensions written?
RSC dimensions are normally written as length x width x depth, with the inside measurement tied to the packed product. Include room for inserts and cushioning, then confirm the board thickness in the dieline. About 1/16 inch, or 1.5 mm, is a common dimensional tolerance reference. Measure the actual product before approving the finished fit.
Can an RSC be printed?
An RSC can use flexographic printing for corrugated graphics, marks, and handling information. Digital printing can suit a shorter run or an artwork trial. The artwork brief should identify outside or inside print, color coverage, barcode areas, seams, scores, and tape zones. Review a digital proof so small type and cut-edge bleed are caught before production.
What information helps quote an RSC carton?
An RSC quote needs the packed length, width, and depth, approximate weight, quantity, closure method, product orientation, shipping environment, and delivery location. Add any dividers, pads, windows, or inserts. State whether the dimensions are inside or outside measurements, because that changes the dieline and the board clearance required for the packed product.
