Cisco 4G-ANTM-OM-CM Manual page 197

Cisco Aironet 2.4 GHz and 5 GHz Dual-Band Polarization-Diverse Directional Array Antenna (AIR-ANT2566D4M-R)
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Figure 2 Dimensions of the Antenna with Brackets and Cables
254.0
240.0
254.0
240.0
4X 4.50
THRU ALL
481
217.0
41.0 176.0
36" 1"
FROM BOTTOM
EDGE OF RADOME