Leviton Extender Brackets provide an additional two inches of depth and enhanced ventilation within Leviton 28" and 42" Structured Media enclosures. The Extender Brackets, which are attached between the enclosure and the cover, form a frame assembled from four 2-inch-deep sheet-metal rails with louvers on each side. The greater depth allows for better cable management and for larger modules, such as audio amplifiers, to be mounted within the SMC enclosure.