commercial kitchens, changing rooms and press and education centres. The main middle tier, known as the "Club Level", is premium priced and also includes the director's box. There are 7,139 seats at this level, which are sold on licences lasting from one to four years. Immediately above the club tier there is a small circle consisting of 150 boxes of 10, 12 and 15 seats. The total number of spectators at this level is 2,222. The high demand for tickets, as well as the relative wealth of their London fans, means revenue from premium seating and corporate boxes is nearly as high as the revenue from the entire stadium at Highbury. The upper tier is contoured to leave open space in the corners of the ground, and the roof is significantly canted inwards. Both of these features are meant to provide as much airflow and sunlight to the pitch as possible. Supporters in the upper tier on one side of the ground are unable to see supporters in the upper tier opposite. As part of a deal with Sony, the stadium was the first in the world to incorporate HDTV streaming. In the north-west and south-east corners of the stadium are two giant screens suspended from the roof. The pitch is in size and the total grass area at Emirates is . Like Highbury, it runs north–south, with the players' tunnel and the dugouts on the west side of the pitch underneath the main TV camera. The quality of Arsenal's pitch & groundsmanship has been recognised internationally by bodies such as the Institute of Groundsmanship. The away fans are found in the south-east corner of the lower tier. The away supporter configuration can be expanded from 1,500 seats to 4,500 seats behind the south goal in the lower tier, and a further 4,500 seats can be made available also in the upper tier, bringing the total to 9,000 supporters (the regulation 15% required for domestic cup competitions such as the FA Cup and EFL Cup). In total, the current seated capacity is 60,704, with future facilities in place which may allow future expansion of seats pending approval from regulatory bodies such as the Islington Council. The stadium additionally has facilities for fans with disabilities including a Guide Dog Toilet facility, a Disabled Supporters Match Day Lounge, Changing Places Toilet facilities which includes a hoist and changing table. In September 2017,