12x6x3 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack
$14.01
/ bundle of 25$0.56 per box
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
12" × 6" × 3"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 12" × 6" × 3" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 5.9 lb |
| Outer carton (shipping) | 18.5 × 9.75 × 7.5 in |
| LTL freight class | Class 125 |
| GTIN | 848109006345 |
| SKU | 1263 |
About this item
SKU 1263 — 12" × 6" × 3", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
The 12" x 6" x 3" ECT-32 kraft shallow corrugated shipping box is for books, binders, framed prints, catalogs, folded apparel, and other low-profile items. Listed dimensions are 12" x 6" x 3"; board and format details include ECT-32, single wall; sold as a pack of 25; listed weight 5.9 lb. For fit checks, use the 12" x 6" x 3" inside dimensions for flat goods that need less empty depth than a taller shipping box.
Ideal for shipping documents, framed art, signage, flat goods, and large prints. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Flat shipping boxes: Good fit for shipping documents, framed prints, signage, flat goods, apparel layers, and large paper products. These corrugated boxes help small businesses, ecommerce teams, and warehouse shippers match products to the right box size for everyday fulfillment.
Common questions
What is ECT-32 and why does it matter for my shipping operations?
ECT (Edge Crush Test) 32 means each box withstands 32 lbs of pressure per lineal inch, ideal for medium-weight products and stacking 3 - 4 boxes high on pallets. This single-wall construction balances protection, cost, and freight efficiency without excess material waste.
Can these boxes stack safely on pallets during storage and transit?
Yes. ECT-32 kraft corrugated supports stacking heights up to 4 - 5 boxes when properly distributed and loaded. For heavier goods, conduct a weight test or consider double-wall alternatives. Correct packing technique and even weight distribution are critical.
How does the long-side opening improve packing efficiency?
The wide opening along the 12" length eliminates awkward angled insertion and reduces packing time by 15 - 25% compared to standard end-opening boxes. Workers can pack items faster, reducing labor costs and shipping errors while maintaining product safety.
Are these boxes suitable for e-commerce and direct-to-consumer shipping?
Absolutely. The kraft kraft finish provides professional branding appeal, ECT-32 protection safeguards items during last-mile delivery, and the specialized long format is use for high-volume fulfillment of wines, tools, textiles, and specialty goods. Bulk ordering (25-unit bundles) maximizes volume discounts.
Order support
Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.