Hi,

You may need to inherit the product.label.layout model and create a new format to print in a new label size. The following code will guide you in achieving this,

Firstly Inherit the model,

class ProductLabelLayout(models.TransientModel):

_inherit = 'product.label.layout'

print_format = fields.Selection(selection_add=[('new_format', 'Format'),], ondelete={'new_format': 'set default'})

def _prepare_report_data(self):

xml_id, data = super()._prepare_report_data()

if 'new_format' in self.print_format:

xml_id = 'report.custom_labels.report_new_format'

data = {

'active_model': active_model,

'product_tmpl_name': self.product_tmpl_ids.name,

'product_tmpl_price': price,

#you can add the data needed to print in the label

}

return xml_id, data

Controller for Report,

class ReportProductLabelTag(models.AbstractModel):

_name = 'report.custom_labels.report_new_format'

_description = 'Label'

def _get_report_values(self, docids, data):

if data.get('active_model') == 'product.template':

Product = self.env['product.template']

elif data.get('active_model') == 'product.product':

Product = self.env['product.product']

else:

raise UserError( _('Product model not defined, Please contact your administrator.'))

return {

'doc_ids': docids,

'data': data,

}

Paperfromat for label layout,
<record id="paperformat_layout_label" model="report.paperformat">
<field name="name">Label</field>
<field name="default" eval="True"/>
<field name="format">custom</field>
<field name="page_height">267</field>
<field name="page_width">175</field>
<field name="orientation">Landscape</field>
<field name="margin_top">0</field>
<field name="margin_bottom">0</field>
<field name="margin_left">0</field>
<field name="margin_right">0</field>
<field name="disable_shrinking" eval="True"/>
<field name="header_line" eval="False"/>
<field name="header_spacing">0</field>
<field name="dpi">96</field>
</record>

Action for report,
<record id="report_new_format" model="ir.actions.report">
<field name="name">New</field>
<field name="model">product.template</field>
<field name="report_type">qweb-pdf</field>
<field name="report_name">module_name.report_new_format</field>
<field name="report_file">module_name.report_new_format</field>
<field name="paperformat_id"ref="paperformat_layout_label"/>
</record>

Create custom template layout,
<template id="report_new_format">
<!-- Add template format -->

<template>

Hope it helps