Hi Joe,
Thank you for taking my phone call today ( night ).
By manufacturing the seal fixture to the dimensions on the sign off drawing ( attached ) and placing the retractable pins to those dimensions, the new dimensions for your lid should be 11.811 ( 300 mm ) x 13.941 ( 354.102 mm ) using 1 mm as the tolerance.
Please send me a written ok to proceed with the manufacture of your seal fixture.
Thank you,