The HDRF-20U60-A1 from RF Electronics is an RF Shielded Test Enclosure that operates from 20 MHz to 6 GHz.  It has a thick RF-absorbing foam that provides an isolation of over 95 dB. The device has shielded power filters which can be used to power devices placed inside the enclosure while blocking all wireless signals. The absorbers deaden standing waves and reflections with a reflection loss of -25 dB at 2.4 GHz and higher frequencies.

This shielded test enclosure is available in a 19" rack mount unit that measures 436 (W) X 880 (H) X 585 (D) mm (exterior) and is ideal for 802.11 a/b/g/n/ac/ax, WLAN, Bluetooth, digital forensic, R&D, EMC testing, Wireless testing, RFID, 3G, LTE, 5G Device Testing. The enclosure has several I/O connector options including HDMI, RJ45, USB, DB9, VGA, DB25, SMA, RJ232, and AC/DC.