Notifier EQDR-D4 Equipment Door AssemblyEQ Series cabinets provide an effective solution for applica tions that require distributed components such as power sup plies, amplifiers, and multiple I O modules. The EQ Series provides superior ventilation for devices such as amplifiers and field power supplies, ample room for wire or fiber optic media between each row, and a space efficient package that allows for the consolidation of multiple system components in a single enclosure.