


When you retrofit the IST RETRO Door Station (RETRO-D, sold separately) into a large door station opening, such as a NuTone sized opening, use the IST RETRO Intercom Door Station Retrofit Mounting Frame to eliminate the need for drywall repair. The frame serves as a simple adapter plate, which screws onto the existing door station mounting box. Your new IST RETRO Door Station then screws onto the plate (screws provided).
Since 2005, IntraSonic Technology (IST) has been enriching the residential audio experience by manufacturing robust yet easy-to-use home audio systems. The IST product line offers a premium h