This listing is for a pair of JBL Control 24Ct Micro speakers.

Specs:
Frequency Range 85 Hz - 25 kHz
Power Rating See transformer taps
Transformer Taps 9W, 4W, 2W, 1W (& 0.5 W taps @ 70V)
Crossover Frequency 3.5 kHz
Maximum SPL (1m) 94 dB (top 70V/100V tap)
Sensitivity 86 dB (100 Hz - 10 kHz)
Coverage Angle 150° conical
Input Connectors Screw-down terminals.
Drivers LF Driver: 115 mm (4.5 in)
HF Driver: 12 mm (0.5 in)
Color White
Safety Agency Suitable for use in air handling spaces per UL1480, UL2043, NFPA90 & NFPA 70. S7232/UL Listed, Signaling Speaker. Transformer UL registered per UL1876. In accordance with IEC60849/EN60849.
Backcan formed steel (included "blind-mount")
Baffle/Rim Medium impact polystyrene, fire rated UL94V-O
Ceiling Cutout Size 167 mm (6.6 in) diameter (cardboard cutout template included)
Included Accessories C-shaped support backing plate 2 tile support rails (fits both 2 ft and 600 mm tiles) Cutout template, cardboard
Optional Accessories MTC-24TR trim ring for retrofit installations MTC-24NC optional new construction bracket, flat MTC-24MR optional mud ring construction bracket
Plenum Usage Yes, backcan included