Best Pick
⚠ DIM +37 lb92% Perfect fit22x18x16 Corrugated Shipping Boxes 15/pk
22″ × 18″ × 16″
+$0.00 Seller Free shipping · 39 lb billed
$3.43
landed per box
$3.30 each
pack of 15 · $49.50
← NiceBoxFinder⚠ DIM +37 lb92% Perfect fit 
⚠ DIM +27 lb100% Perfect fitBuy →
⚠ DIM +45 lb86% Snug fitBuy →
⚠ DIM +45 lb86% Snug fitBuy →
⚠ DIM +45 lb86% Snug fitBuy →
⚠ DIM +45 lb86% Snug fitBuy →
Cheapest 22×18×12 padded mailer
Compare real eBay prices for 22×18×12 shipping boxes with DIM-weight-aware shipping estimates.
Live listings — sorted by landed cost per box
⚠ DIM +37 lb92% Perfect fitBuy →
⚠ DIM +27 lb100% Perfect fitGRAINGER APPROVED 493T90 PK 15 Shipping Box,22x18x12 in 493T90
22″ × 18″ × 12″
+$9.99 Seller Calculated · 29 lb billed
$3.84
landed per box
$3.17 each
pack of 15 · $47.55
⚠ DIM +45 lb86% Snug fit15 Pack 24x18x18 Kraft Cardboard Carton Mailer Shipping Corrugated Packing Boxes
24″ × 18″ × 18″
+$0.00 Seller Free shipping · 47 lb billed
$4.67
landed per box
$4.36 each
pack of 15 · $65.40
⚠ DIM +45 lb86% Snug fit24x18x18 Corrugated Shipping Boxes 15/pk
24″ × 18″ × 18″
+$0.00 Seller Free shipping · 47 lb billed
$4.95
landed per box
$4.63 each
pack of 15 · $69.45
⚠ DIM +45 lb86% Snug fitUOFFICE Corrugated Boxes 18 x 18 x 24" - Pack of 10 Shipping Cartons
18″ × 18″ × 24″
+$0.00 Seller Free shipping · 47 lb billed
$5.61
landed per box
$5.24 each
pack of 10 · $52.40
⚠ DIM +45 lb86% Snug fitUOFFICE Corrugated Boxes 18 x 18 x 24" - Pack of 10 Shipping Cartons
18″ × 18″ × 24″
+$0.00 Seller Free shipping · 47 lb billed
$5.61
landed per box
$5.24 each
pack of 10 · $52.40
Showing 6 of 29 real listings. Want all of them with custom quantity and weight? Search now →
What fits in a 22×18×12 box
A 22 × 18 × 12 inch box holds 4,752 cubic inches (2.75 cu ft) of interior space, putting it in the large-category. It's a popular choice for shipping items like multiple pairs of shoes, small appliances, clothing bundles — things that fit comfortably within those dimensions while leaving room for protective padding. Large boxes at this size are usually sold in smaller bulk packs — 10 to 25 — because storage and shipping of the empty stock itself becomes a consideration.
Shipping math for this size
Shipping cost for this size depends heavily on dimensional weight. For a 22×18×12 box, UPS and FedEx Ground compute a DIM weight of 35 lbs using their 139 divisor, while USPS Ground Advantage uses a 166 divisor, giving 29 lbs. Carriers bill whichever is greater — your actual weight or the DIM weight. USPS's higher divisor makes it roughly 6 lbs cheaper than UPS/FedEx for this size when your item is light, which is why our search results factor in DIM-weight automatically instead of just showing sticker prices.
How to pick the right pack size
When buying a 22×18×12 box, the biggest cost lever isn't which retailer you pick — it's which pack size you commit to. A 100-pack typically costs 2-3× more than a 25-pack but brings the per-unit cost down by 40-60%. Our ranking is based on **landed cost per box** — the pack price plus shipping, divided by the number of boxes. A 100-pack with $10 shipping works out cheaper per box than a 25-pack with the same shipping, because the fixed cost spreads further. Every listing below links to a real product page from eBay, ULINE, or other retailers; we don't show placeholder results.
Search with your own dimensions
Pre-filled with 22×18×12. Adjust weight, quantity, or size as needed — we'll re-rank for your exact scenario.