Electro-metrics Ultra-wideband Omni-directional Antenna Em-6857 20 Mhz 40 Ghz September 15, 2024 admin E COMM roof top antenna installation12.10×14.50×14.40 (21). This item is in the category Business & Industrial\Electrical Equipment & Supplies\Other Electrical Equipment & Supplies. Diameter 11.5 cm (4.5). GIVE US A CHANCE TO MAKE IT RIGHT.