These speaker stands are meant to be universal as long as you stay within the weight rating. I would give our Customer Care team a call @ 800-359-5520 and they can check for you.
Jake @ SANUS
Thanks so much for the question. Here is a link to the technical drawings of the speaker stands: http://www.sanus.com/assets/products/sf22/documents/SF22b_SF22_SLDDRW.PDF
You will find all desired measurements in this file.
Thanks again, Michael with the SANUS Care Team