How to create custom paper size

Frappe Framework Print Formats
1

I want to print 3 pages for my 3 items in my child table using custom paper size. Can anyone help how can I going to achieve this?

2

Hi,

There more way than one way to accomplish that :

https://frappeframework.com/docs/user/en/desk/printing

3
4

I don’t want to create page break
only having custom paper size for one doctype

5

I don’t want to set all my print layout to some label paper size
I only want to change for one of my doctype to print at label size