Hi-Fi Speakers
Bose Professional FreeSpace FS4CE white
Bose Professional FreeSpace FS4CE white, Ceiling Speaker, 1x 4.5" Driver, Removable and rotatable logos, Euroblock connectors, Frequency response (-10dB): 70 - 17000 Hz, Coverage pattern 145º, Power: RMS 50W / peak 200W, Sensitivity (SPL/1W@1m): 88...
https://www.bizrate.co.uk/hifispeakers/bose-professional-freespace-fs4ce-white-oid16107096289.html