Video Link: www.youtube.com/watch?v=_8dTutLIqDE
All shipping friendly boxes supplied by Zakka Canada have a height of 16-18mm, to pass through Canada Post 2 centimeter slot, so you can ship your items by "Other Lettermail" with Canada Post.
We supply 2 kinds of shipping friendly lettermail boxes (slot boxes):
1. 2-piece lid+bottom boxes: rigit box, set up box, come with cotton or foam insert, no folding needed. Product SKU# as bellow:
2. Corrugated folding box: You need to fold and make it into a box yourself. No insert available.Product SKU# as bellow:
ZSB26TH: black folding boxes is thinnest and will fit USPS requirement as well.
Requst a sample pack: www.zakkaCanada.com.