The dbGUARD M from DVTEST is a RF Shielded Test Enclosure with Frequency 300 MHz to 18 GHz, Isolation/Insulation 75 to 90 dB, Interior Depth 14 Inches, Interior Height 14 Inches, Interior Width 11.25 Inches. Tags: Benchtop, Bench-Top. More details for dbGUARD M can be seen below.