Use SKU 664 when the packed item fits the listed 6 x 6 x 4 box and no special listed spec is required.
6 x 6 x 4 boxes
Packrift carries 6 x 6 x 4 boxes when matching SKUs are in stock. Compare the matching SKUs by listed material, color, strength, price, and live product page details before buying.
If you need a 6 x 6 x 4 box, start with SKU 664. The other matching SKUs are for specific listed requirements such as exterior, style, depth, material, or board spec.
2 matching SKUsDefault: SKU 664Lowest shown unit: $0.35/box25 pack default
Buying Path
Move away from the default only when the live product page lists a spec your order actually requires.
If the finished packed item is tight on any side, do not force the 6 x 6 x 4 fit. Use a nearby size or finder page before ordering.
Default pick: SKU 664
Start with SKU 664 when the packed item fits the listed 6 x 6 x 4 box and the order does not need a special listed exterior, style, depth, material, or board spec. It is the lowest shown unit-cost option in this matching set; compare the other SKUs only when their listed specs matter.
That makes it the clean default buying path for this exact size: simple spec, 25 pack, and no upgrade unless the job needs one.
$8.75 / $0.35/box per 25 pack
How to choose
Start with the default
Choose 664 when the packed item fits the listed 6 x 6 x 4 box. It keeps the order simple and avoids buying listed upgrades you did not ask for.
Other options for this size
Choose a non-default SKU only when its live product page lists the exterior, style, depth, material, or board spec your purchasing standard requires.
When to switch
Switch products when the size works but the listed exterior, style, depth, material, or board spec changes the buying workflow.
Matching Packrift SKUs
This is the decision set for the 6 x 6 x 4 box family. Start with the default, then move only when a listed SKU attribute changes the order.

SKU 664
6x6x4 ECT-32 Kraft Corrugated Boxes - 25 Pack Bulk Shipping
Default exact-size option. ECT-32 kraft corrugated
Choose this if: you want the standard 6 x 6 x 4 option at the lowest shown unit cost in this matching set.
Skip if: you need a different exterior, style, pack quantity, board spec, material, or listed spec.
Buyer note: Best first buy in this matching set when no listed upgrade requirement applies. Skip it when color, style, board spec, pack quantity, or another listed spec matters.
$8.75 / $0.35/box

SKU GB664BK
6x6x4 Black Gloss Gift Boxes - Case of 100 Fibreboard Cartons
Exact-size comparison option.
Choose this if: this SKU's listed product page details match your packing requirement.
Skip if: another matching SKU better fits the material, pack quantity, or board spec you need.
Buyer note: Choose this SKU when its listed material, pack quantity, or style matches the purchasing spec.
$203.99 / $2.04/box
Side-by-Side Details
Use this grid to compare only verified product fields: SKU, listed fit, strength / style, pack quantity, bundle price, unit price, and the buying reason.
| SKU | Best fit | Strength / style | Pack / unit | Bundle / unit | Choose when |
|---|---|---|---|---|---|
| 664 | Default exact-size option | ECT-32 kraft corrugated | 25 | $8.75 / $0.35/box | you want the standard 6 x 6 x 4 option at the lowest shown unit cost in this matching set. |
| GB664BK | Exact-size comparison option | 100 | $203.99 / $2.04/box | this SKU's listed product page details match your packing requirement. |
Use this size when
- Your order requires the listed 6 x 6 x 4 size.
- Your product and protective packing fit without forcing the fit.
- You want to confirm the exact matching SKU before choosing a buying path.
Do not use this size when
- Your product needs more room on any listed inside dimension.
- You need a compliance, carrier, food, or hazardous-material claim not stated on the product page.
- A nearby page better matches the size, format, or product spec.
Before you reorder
- Confirm the SKU, pack quantity, price, and availability on the live product page.
- Reorder by SKU when the product and packing workflow have not changed.
- Use the quote path for larger, mixed-SKU, or recurring orders.
If 6 x 6 x 4 Almost Fits
Do not force a close fit. Compare nearby pages when the packed item needs more room, less empty space, or a different product family.
6 x 6 x 4 boxes 100 pack
Compare this nearby Packrift page when the packed fit or buying spec changes.
6 x 6 x 4 boxes 25 pack
Compare this nearby Packrift page when the packed fit or buying spec changes.
Black 6 x 6 x 4 boxes
Compare this nearby Packrift page when the packed fit or buying spec changes.
ECT-32 6 x 6 x 4 boxes
Use this when the packed item needs more room than the current exact size provides.
Exact Spec Procurement Center
Use this finder page when you need to move up, move down, or compare the broader family.
Related pages
- Exact Spec Procurement Center
- Box Sizes by Dimension
- 6 x 6 x 4 boxes 100 pack
- 6 x 6 x 4 boxes 25 pack
- Black 6 x 6 x 4 boxes
- ECT-32 6 x 6 x 4 boxes
- Kraft Corrugated 6 x 6 x 4 boxes
- 7 x 5 x 4 boxes
- 7 x 5 x 4 boxes 25 pack
- ECT-32 7 x 5 x 4 boxes
- Kraft Corrugated 7 x 5 x 4 boxes
- 8 x 6 x 3 boxes
Buyer FAQ
- Which 6 x 6 x 4 boxes should I start with?
- Start with 664 if the packed item fits the listed 6 x 6 x 4 box and the live product page details match your order requirement.
- When should I choose a non-default SKU?
- Choose a non-default SKU only when the live product page lists the exterior, style, depth, material, or board spec your order actually requires.
- What if my item is close to 6 x 6 x 4?
- Measure the product after adding the packing material you actually use. If any finished packed dimension is over the listed inside size, choose a larger product instead of forcing the fit.
- Can I reorder by SKU?
- Yes. Reorder by the same SKU when the product, pack quantity, and packing workflow have not changed. Use the quote path for larger, mixed-SKU, or recurring orders.
- When should I request a bulk quote instead of using the product page?
- Use the quote path when you are buying recurring volume, comparing multiple SKUs, or standardizing packaging across a team.