Yamaha VXC4 Pro 70V/8-ohm In-Ceiling Speaker - 4" Plantronics The SR18UB is compatible with

The SR18UB is compatible with all standard 19-inch rack equipment and features front and rear pairs of vertical rails with square mounting holes

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x could render NVR inoperable

it packs a lot of functionality into a compact frame

Yamaha VXC4 Pro 70V/8-ohm In-Ceiling Speaker - 4" Plantronics The SR18UB is compatible withYamaha Pro 70V 8 ohm In Ceiling Speaker Yamaha designed the new VXC speakers to accommodate a growing list of applications in the installation market. While these speakers deliver quintessential Yamaha sound quality, they have also been carefully designed for safe and easy installation. *Compatible mounting brackets: YAC VXC NCB4, NCB6, NCB8 Find additional information like application diagrams and product details on the Yamaha website. Ceiling