Shure MX395 Microflex Low-Profile Omnidirectional Boundary Microphone for Installs (White)

Shure does not rate the MX395 Microflex Low-Profile Boundary Microphone models for water resistance. This will probably withstand one or two accidents or water spills, but I would not recommend installing it in an environment where that will happen frequently. If the microphone does get wet, it would be best to wipe it dry as soon as possible. Repeated exposure to spills or splashes will damage the microphone. For conference rooms where water spills are more likely, using a hanging mic like this suspended over the table could be less likely to suffer damage from accidents: https://bhpho.to/2xVQp7s

Shure lists the thread size as 7/8"-14 UNF-2B. All relevant installation dimensions for the MX395 are provided by Shure here: http://service.shure.com/s/article/mx395-installation-dimensions?language=en_US You can find additional information in the user manual which also includes a diagram showing all measurements of the mic on page 11 (use the page numbers printed on the pages, not the pdf page numbers): http://www.bhphotovideo.com/lit_files/89562.pdf

You can use any of the Shure automatic mixers such as the SCM410 4-Channel Automatic Mixer (B&H# SHSCM410), SCM810 8-Channel Automatic Mixer (B&H# SHSCM810) or SCM820 8-Channel Digital IntelliMix Automatic Mixer (B&H# SHSCM820). All are compatible with the MX395 Microflex Boundary Microphone.