Kawneer Installers, Kent, Essex, Suffolk, UK

AA®4001 Framing System

AA®4001 Framing System

The AA®4001 Semi-unitised Framing system, designed in line with the DfE’s ‘Building schools for the future’ is compliant with current building regulations, acoustics BB93 and environmentally friendly classrooms BB95.   As well as traditional stick build and semi unitising, the system offers the advantage of fully unitised assembly and also enables it to meet the demands of fast track work schedules and restricted working conditions. The AA®4001 Semi-unitised Framing system is adaptable to any new construction project and due to the fact that it can be quickly installed in occupied buildings with minimal disturbance, the system is ideal for refurbishment projects.

Product Features

  • Unitised assembly
  • Selection of mullion and transom profiles
  • One vent profile for both open in and open out options
  • Fixed bead
  • Concealed vent, top hung open out and bottom hung open in options

With the decisive advantage of…

  • Offering the advantage of factory fabrication to ensure additional quality control and rapid onsite installation
  • Flexibility in design
  • A streamlined offer
  • Added security
  • Optimum safety and air flow


The AA®4001 Semi-unitised Framing system uses shear block construction and is a fully drained and pressure equalised system offering optimal weather performance.  Concealed vents are cleated and crimped.

Weather Performance

  • The system, installed and glazed to Kawneer recommended procedures, has been tested in accordance with BS 6375.
  • Air Permeability:  BS EN 12207:2000 Class 4
  • Watertightness:  BS EN 12208:2000 Class 9A
  • Resistance to Windload:  BS EN 12210:2000 Class C4