The IG-253B from IGOS RF shielding is a RF Shielded Test Enclosure with Frequency 100 MHz to 6 GHz, Isolation/Insulation 90 dB, Interior Depth 8.27 Inches, Interior Height 8.27 Inches, Interior Width 8.27 Inches. Tags: Benchtop. More details for IG-253B can be seen below.