AluK SL52 curtain walling, 58BW TBT (tilt before turn) window, 58BD balcony door and GT55 TB commercial entrance door systems were specified for all 555 low rise homes. In the case of windows and doors, Lifetime Homes require that occupants have a reasonable line of sight from a seated position in the living room, and the use of at least one window for ventilation in each room. The AluK 58BW TBT window and 58BD balcony door systems were designed with the tilt turn handles below 1200mm from the finished floor to meet accessibility requirements. All windows and doors complied to the Secured By Design (SBD) initiative, with the GT55 TB commercial door systems integrating electric strike access with key fob entry. The AluK GT55 TB is believed to be the first aluminium commercial door system to be SBD accredited.