Simplex 2975-9145 Surface or Flush Mount Box (Red)

The Simplex 2975-9145 is a red mounting backbox used for select Simplex notification appliance installations when an adapter plate is specified. It supports flush or surface mounting and is commonly used for retrofit situations where a deeper, purpose-matched box is needed. Key Specifications: Type: Flush or surface mount backbox Core Function(s): Mounting box for Simplex notification appliances that use adapter plate mounting Color: Red Dimensions: 7 7/8 in H x 5 1/8 in W x 2 3/4 in D Compatible Adapter Plates: 4905-9931 - Adapter plate for select TrueAlert ES wall A/V appliances 4905-9903 - Adapter plate for select TrueAlert multi-candela S/V appliances Compatible Devices: 49AV-WRF - TrueAlert ES addressable wall horn/strobe, red 49AV-WWF - TrueAlert ES addressable wall horn/strobe, white 49AV-APPLW - TrueAlert ES addressable wall horn/strobe (cover and mounting plate ordered separately) System Compatibility: Used with Simplex notification appliance mounting configurations that specify this backbox with an adapter plate.