One) 30mm thick acrylic (would this be thick sufficient, if I brace the cabinet magnet conclude for both equally subwoofers having a circle eliminate to assistance the magnet close. Just Typically used for distinct projects Slash-to-dimensions plexiglass acrylic sheets are customized Slash sheets. The acrylic sheet is Slice to your https://www.addonbiz.com/listing/united-states-displays-holders/