- Features
1. High insulation against airborne noise
2. Uniform sound field across the measurement plane
3. Usable for pressure microphones down to 50 Hz and for pressure gradient microphones down to approx. 500Hz
4. Automatic Open/Close by cylinder
| Outside Dimension | L：1050mm * W：950mm * H：800mm |
| Inside Dimension | L：700mm * W：800mm * H：550mm |
| Net Weight | ~ 450 Kg |
| Sound Insulation Ability | > 45dB(A-Weighting) SPL ref. 20uPa |
| Operation | Air Cylinder Automatic Control |