The thread size for the top of the V120 mount is M10-1.5.

We recommend first checking the IsoAcoustics Product Selector to check if a specific speaker model is compatible with the V120 and determine which brackets and adapters are required. If a model is not listed in the Product Selector, we recommend submitting an inquiry to IsoAcoustics by email to info@isoacoustics.com. The V120 is only compatible with speakers that have threaded connection points located on the back of the studio monitor, or have threaded connection points on the sides of the speaker and U bracket must be available for the speaker to connect to the V120. Please check the V120 U-Bracket Adapter to verify if the U bracket is compatible with the V120 U Bracket Adapter. If the threaded inserts are located on the back, the hole pattern must match the V120 bracket with a spacing of 2.75” to 3” vertical (70-76mm), or match one of the V120 adapters.  

The V120 adds between 3.5” to 6.3” (90 to 160mm) with the ceiling plate installed. When installing with the L-Bracket, V120 will add 3.5” (90mm) or more, depending on the gap between the speaker and the L-Bracket. When using the C-Bracket, the connection to the speaker will be approximately 6.3” (160mm), but the gap from the speaker to the ceiling will be less when the speaker is tilted. When attaching to the bottom flange with the U Bracket Adapter, the V120 will add 4.17” (106mm).