Possible Clues:

• Grating in a door or window
• Heat drug in front of radiator
• Metal grating, to cook eggs initially
• Grating lines interrupting endless woe
• Ornamental grating
• Heard cook grating
• Screen — grating
• It affords ventilation in restaurant, say
• The bars that sound mixed in the restaurant
• The stream takes up the whole of the middle of the grating