Hi Peim
Please revise the AW to follow what the customer sent me (attached)
I think the black borders are about 5 mm (W) on all four sides
So now the white inside (glass area) inside of the black shape is 29.2 (H) x 20.5 (H)
The border is 5 mm (D)
So now the outside measurement of the black shape is 29.7 (H) x 21 (W)
Thanks
paul