- Built in expansion relief
- Supplied with certificate of conformance
- Meets CTIA extended dimensions, 300 x 225mm +/- 2mm
- Shell 2mm +/-10% thick except at the ear and sagittal seam
- Strengthened for horizontal manipulation
- 13mm Perspex base with x 4 threaded M8 fixing hole
- Individually measured
- CTIA material filled weight 6.75kg
- Fixing, 4x 8mm screws 6mm deep 110 x 75mm pitch
