The HDRF-3123 from RF Electronics is a RF Shielded Test Enclosure with Frequency 20 MHz to 12 GHz, Isolation/Insulation 90 to 130 dB, Interior Depth 18.7 Inches, Interior Height 29.2 Inches, Interior Width 20.9 Inches. Tags: Rackmount. More details for HDRF-3123 can be seen below.