Related Clues:

• Expanse or neighbourhood
• Length by breadth
• Tract, region
• Extent of a 2-dimensional surface
• Length multiplied by breadth
• Succession, order
• Extent of a two-dimensional surface
• Extent from side to side
• Space for a specific purpose, say picnic
• The measure of a surface
• Field of activity or surface
• 'Tract, region (4)'
• The A.A. might be round about this, and that's about the size of it
• The region where there is more ventilation, by the sound of it
• That space sounds better ventilated