Hi,

Keep any screws 2 inches away from the central binding-post connectors inset into the rear panel and you'll be fine. Use 1/2-inch screws or a little longer if you want. The screws provide their own seal even if they break through the rear panel, which is made of 3/4-inch MDF (actually about 5/8-inch thick).

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)