Best Pick
eBayeBay Brand Central⚠ DIM +8 lb
3” eBay Sticker – Red, Blue, Green and Yellow — 500 Stickers
16″ × 12″ × 8″
+$22.90 USPS Ground Advantage · 10 lb billed
$0.09
each
pack of 500 · $45.00
← NiceBoxFinder
Buy →
Buy →
Buy →
Buy →
Buy →
Cheapest 16×12×8 padded mailer
Compare real eBay prices for 16×12×8 shipping boxes with DIM-weight-aware shipping estimates.
Live eBay listings — sorted by cost per useful box
Buy →
eBayeBay Brand Central⚠ DIM +8 lb
Comic Book Mailer Filler Pads — 50 Corrugated Sheets
16″ × 12″ × 8″
+$22.90 USPS Ground Advantage · 10 lb billed
$0.48
each
pack of 50 · $24.00
eBay⚠ DIM +8 lb
50 16x12x8 Cardboard Paper Boxes Mailing Packing Shipping Box Corrugated Carton
16″ × 12″ × 8″
+$22.90 USPS Ground Advantage · 10 lb billed
$1.52
each
pack of 50 · $76.00
eBay⚠ DIM +8 lb
25 16x12x8 Cardboard Paper Boxes Mailing Packing Shipping Box Corrugated Carton
16″ × 12″ × 8″
+$22.90 USPS Ground Advantage · 10 lb billed
$1.20
each
pack of 25 · $30.00
eBay⚠ DIM +8 lb
GRAINGER APPROVED 55NM63 PK 25 Shipping Box,16x12x8 in 55NM63
16″ × 12″ × 8″
+$22.90 USPS Ground Advantage · 10 lb billed
$1.29
each
pack of 25 · $32.25
eBay⚠ DIM +8 lb
16x12x8 Corrugated Shipping Boxes 25/pk
16″ × 12″ × 8″
+$22.90 USPS Ground Advantage · 10 lb billed
$1.70
each
pack of 25 · $42.50
Showing 6 of 12 real listings. Want all of them with custom quantity and weight? Search now →
What fits in a 16×12×8 box
A 16 × 12 × 8 inch box holds 1,536 cubic inches (0.89 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 16×12×8 box, UPS and FedEx Ground compute a DIM weight of 12 lbs using their 139 divisor, while USPS Ground Advantage uses a 166 divisor, giving 10 lbs. Carriers bill whichever is greater — your actual weight or the DIM weight. USPS's higher divisor makes it roughly 2 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 16×12×8 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 *cost per useful box*, which gives bonus boxes partial credit — so a 100-pack can still win for single-box needs if the per-unit price is low enough, but a 25-pack often ranks higher when you only need a few. Every listing below links to a real eBay product page; we don't show placeholder results.
Search with your own dimensions
Pre-filled with 16×12×8. Adjust weight, quantity, or size as needed — we'll re-rank for your exact scenario.