They were specified by Frankham Consultancy Group because of their highly effective attenuation of traffic noise and low casing breakout noise, which is particularly important for SEN facilities. Reliable control of temperature and draught were important factors also. SAV Systems worked closely as part of the project team to ensure that each unit met the specific needs of the space in which it was installed. For example, units on the ground floor are connected horizontally through external walls, whilst first floor units are ducted vertically through the roof.