How to write two dimension of a slot or rectangle?

T-Slot Nuts - Metric Sizes, manufactured by Te-Co standard slot sizes STANDARD BOLT & SCREW SIZES 1 Page 2 LENGTH M6 M8 M10 M12 M16 M20 M24 M27 M30 M33 M36 POZI COMBI SLOT PLAIN ZINC PLAIN ZINC ZINC ZINC standard parking slot size standard SD memory card slot microSD edit MicroSD form Most standard size SD cards are mm thick, with

standard slot sizes Standard Tool bits used for creating slots have normal tolerance of +- or +- This may change depending upon the size and function of the