I posted a box today, admittedly I didn’t measure it as I hoped it would be around a small parcel size.
I took it to the PO and the lady measured it.
Turns out that depending on where you put the address, dictates which measurement applies to the PO measurements.
eg (Ive made these dimensions up) PO says box can be 20cm deep and 16cm across, but depending on where the address is, it could be measured as 16cm deep and 20cm across making it too big one way and the postage price goes up.(Ii hope that made sense)
The lady didn’t seem too sure which wasn’t helpful, I changed where Id put the address and luckily it went through as a small parcel.
Has this happened to you?