Less than 7 cm deep. The Revel C363XC , 6.5” flush-mount speaker delivers true high-performance Revel sound in any location, hot, cold, damp, humid or wet. Can be used in marine applications.
Bose FreeSpace 360P full-range outdoor loudspeaker designed to blend with the landscaping. Provides deep warm bass and sweet high notes with a 360 degrees sound field. Price is each, Not per pair
Monitor Audio bandpass design incorporates an internally loaded 12" C-CAM driver which sits in a waterproof rotationally-moulded polymer enclosure buried below the garden surface.