Pelco Spectra IV In-Ceiling Mount Dome System is designed for in ceiling applications with indoor and environmental options. No additional mount purchase in needed. Environmental models are available for all outdoor applications and include a heater, blower defroster combination housing. In addition to indoor in-ceiling and indoor/outdoor pendant back boxes, two new back box models have been added to the Spectra IV line. An environmental in-ceiling model for outdoor soffits and an indoor surface mount model that installs quickly and easily to any type of ceiling. All pendant and environmental in-ceiling models are environmentally sealed to meet IP66 and NEMA 4X standards.