Gridfinity Base for Ikea Alex Smaller 295mm x 523mm

The original Gridfinity base by Pey fits in a 7x12 grid into Ikea Alex drawers. In total the original design measured 297mm x 525mm. However, my Alex drawers measure 295mm x 523mm . There are lots of comments about the original's fitment, being too tight. I removed 2mm from the width and 2mm from the depth to fit my Alex drawers perfectly. No sanding or cutting required. Simples.