Box style comparison
RSC vs HSC corrugated boxes
RSC (Regular Slotted Container) is the default brown shipping box - four flaps top, four flaps bottom, all the same length. HSC (Half Slotted Container) is the same body with no top flaps - an open-top tray you cap with a separate lid or seal another way.
Both are FEFCO/ISTA-recognized box styles, both run on the same case sealers, and both ship flat. The choice comes down to how you load the box, whether you need a lid, and how often you reuse the same carton at the pack station.
Quick answer
Default to RSC for shipping. RSC is the FEFCO 0201 standard - works with every case sealer, fully sealable top and bottom, accepted by every carrier. Pick HSC when you load top-down with totes, parts bins, or repeated kitting at a pack station, or when a separate lid (telescoping or tray-and-lid) actually fits the workflow better.
Side-by-side comparison
| Attribute | RSC (Regular Slotted Container) | HSC (Half Slotted Container) |
|---|---|---|
| FEFCO style code | 0201 | 0203 |
| Construction | One piece, four equal flaps top, four equal flaps bottom, glued/stitched manufacturer's joint | One piece, four flaps on the bottom only, open top - meant to pair with a separate lid or cover |
| Loading method | Side-load or top-load through the open top before sealing | Top-load only - the open top is the loading face |
| Sealing | Tape both top and bottom flaps (H-seal, L-seal, or full bead) | Bottom flaps tape closed; top is open or capped with a tray lid (FEFCO 0204) or telescoping cover |
| Material usage | Standard - top + bottom flaps included | ~12-15% less corrugated per box (no top flaps) |
| Stack strength | Higher - top flaps add compression resistance to the column | Lower as a single box. Stack strength is restored when paired with a fitted lid; without a lid, stack with caution |
| Throughput on a case sealer | Runs on every standard automatic and semi-automatic case sealer (top and bottom) | Bottom-only sealers; top is closed by hand or with a separate lid mechanism |
| Re-use at the pack station | Hard to re-use cleanly - top flaps get torn or stuck closed | Easy - open-top design works as a parts bin, kit tote, or staging tray that empties into shippers |
| Common shipping use cases | Default carrier-bound shipper for nearly every DTC, B2B, and 3PL parcel | Heavy industrial parts that load top-down, batteries on pallets with a fitted lid, parts kitting, internal tote use, display-ready shippers |
| Parcel acceptance | Widely accepted when sealed top and bottom | Needs a sealed top, fitted lid, or palletized handling plan; an open-top HSC is not a parcel shipper |
| Pairs with | Itself - a single box, sealed top and bottom | Tray lids (FEFCO 0204), telescoping covers (FEFCO 0301), or stretch-wrap on a pallet |
| Cost per box | Standard baseline | ~10-12% cheaper than the same-size RSC (less material, but you may need a lid) |
Where each one actually shows up in an operation
RSC at the parcel pack station. 99% of single-parcel DTC shipping is RSC. Pick a size, fold and tape the bottom (or pop a pre-formed bottom-sealed shipper), top-load the contents and dunnage, tape the top. Every case sealer in the world runs RSC.
HSC as a kitting/staging tote. Pick teams stage parts in HSC trays at the bench because there's no top flap to fight. When the tote is full, it goes into an RSC shipper or onto a pallet under stretch wrap.
HSC + fitted lid for industrial loads. Heavy parts (engine components, tooling, automotive) often ship as HSC tray + telescoping lid because the lid handles compression and the open-top tray loads from above with a hoist. The pair behaves like a hinged crate.
HSC for display-ready / retail-ready packaging (RRP). Some grocery and club-store shippers are HSC: bottom seals for transport, the buyer slices a perforated panel, the open top turns the box into a shelf-ready display.
When to choose which
Choose RSC when: you are shipping a single sealed parcel through a carrier, you run a case sealer, you need standard top-and-bottom closure, or you need to apply a visible seam seal. This is the default box style for most fulfillment lines.
Choose HSC when: you load top-down with bulky or heavy items and don't want to fight top flaps, you're using the box as an internal tote/kitting tray (not the final shipper), you're pairing with a fitted lid for an industrial load, or you ship retail-ready displays where the open top becomes the shelf face.
Don't choose HSC when: the open-top box IS your shipper and there's no lid plan. An untaped HSC handed to a carrier will get refused or arrive crushed. HSC always pairs with something - a lid, a stretch-wrapped pallet, or a downstream sealing step.
RSC vs HSC FAQ
Is HSC just an RSC with the top flaps cut off?
Functionally yes, but it's manufactured that way - the corrugator skips the top flap die cut. You get a cleaner edge, slightly less material, and a lower price per box than buying RSCs and ripping the top flaps off (which also ruins your stack strength).
Can I ship an HSC as a parcel?
Only if it has a sealed top, such as a tray lid (FEFCO 0204) or telescoping cover (FEFCO 0301). An open-top HSC by itself is not a parcel shipper.
Why do 3PLs sometimes use HSC at the pack station?
HSC works as a low-cost reusable tote. Picks get staged in the open-top tray, the picker scans, then the contents transfer into the actual RSC shipper. The HSC stays at the bench and gets reused dozens of times.
Is HSC weaker than RSC?
As a single sealed box, yes - the top flaps add ~15-25% to top-load compression. With a fitted tray lid or telescoping cover, the pair often equals or exceeds RSC compression because the lid acts as a second compression cap.