Dimensions: 300 mm (W) x 350 mm (H)
The reasons are fairly obvious - when you use your hands to block a cough or sneeze, the germs stay on your hands. Then your hands spread the germs to doorknobs, tables, chairs and anything else you touch.
The solution is to cough and sneeze in your elbow or on your sleeve, instead.
This resources will assist with Quality Area 2