There are threaded inserts for mounting screws in the bottom of the Omni 10+ and Omni 20+. Mounting accessories are not available via Harman Kardon. For Omni 10+ there are two mounting screw holes which are 3mm in diameter and 67mm apart. For Omni 20+ there are two mounting screw holes which are 3mm in diameter and 110,5mm apart.