Shipping Diecast: Box Size Guide
Pack your Whatnot orders fast and safe. Type in how many cars are in the order and the tool tells you what box to use. Then wrap the cars in a bread bag before they go in.
Ship every order safe and sound
You want the car to reach the buyer in the same shape it left your shelf. That is what keeps buyers happy. This guide makes it easy: pick the right box, wrap the cars in a bread bag, and pack the box so nothing moves.
Use the tool below to find your box size, look at the size charts, and follow the packing steps. Do it the same way each time and shipping gets easy.
How many cars are you shipping?
Enter the number of 1:64 diecast in the order to get a recommended box size.
Know your card size
Most of what you ship is a normal Hot Wheels mainline. Knowing how big it is helps you pick a box or a card protector.
| Item | Approx. size |
|---|---|
| Mainline "long card" | ~6.5 x 4.25 in (165 x 108 mm), plus ~¾ to 1 in blister depth |
| Premium card | ~6.5 x 5.5 in (165 x 140 mm), deeper ~1.25 in blister |
| Card protector (mainline) | ~6.75 x 4.5 in, a touch bigger than the card |
| Card protector (premium) | ~6.75 x 5.75 in |
| Loose 1:64 car | ~3 in long; fits any box with padding |
One carded mainline lays flat in a small box, about 7 x 5 x 3 in. A mainline card runs about 6.5 in long, so you want a box at least 7 in long to give it a little room. Skip anything with a 6 in length, the card will not lie flat.
Box size reference
These sizes are a good starting point for carded or loose cars with some padding. Go up a size for premiums or if you add extra padding.
| Cars | Box size | Notes |
|---|---|---|
| 1 to 2 | Small ~7 x 5 x 3 in | Fits 1 or 2 cars with room for padding. |
| 3 to 6 | Medium ~8 x 6 x 4 in | A normal order of a few cars. |
| 7 to 12 | Large ~10 x 8 x 6 in | Bigger orders. Watch the weight. |
| 13 + | Large, or split into two | Split big orders into two boxes so they weigh and move less. |
Premiums are bigger: one premium fits a ~7 x 6 x 3 in box. A ~8 x 6 x 4 in box holds a few with padding. Team Transport sets need ~9 x 7 x 5 in or bigger.
USPS Ground Advantage works well for most boxes (about 1 to 5 pounds). Priority Mail or Flat Rate can cost less for heavy orders.
Protect each car with a bread bag
🍞 The bread bag trick
Buy a box of fresh bread bags at a local store. They are cheap, clear, and the right size. Stack up to 4 cards, flipping every other one so they lie flat. Slide the stack into a bread bag, fold the top over, and tape it shut with scotch tape. No tying needed. This keeps water, dust, and dirt off the cars and holds the stack together in the box.
- Stack up to 4 cards, flipping every other one so they lie flat.
- Put the stack in a bread bag and tape it shut. No tying.
- This stops the cards from sliding and getting scuffed, and keeps water out.
Packing steps
- Stack up to 4 cards, put them in a bread bag, and tape it shut.
- Wrap each stack in bubble wrap or paper.
- Use the tool above to pick your box size.
- Fill empty space with paper or bubble wrap so nothing moves.
- Tape the box shut, add the label, and ship it (Ground Advantage for 1 to 5 pounds).
📦 Get a tape gun
A packing tape gun or tape dispenser is worth the few dollars. It makes assembling and sealing boxes fast and clean, one pull instead of fighting a roll and picking at the end every time. When you are boxing up a whole night of orders, it saves real time and keeps the seams sealed tight.