The Model OH601S Surface Back Box 18.875"" Use with ES612/AM642 Series Panels Over 8 Buttons or with Postal Switch in panel. Outside Dimensions: 5.00""W X 18.88""H X 2.00""D (127.00mm W x 479.55mm H x 50.80mm D).
Features: - Surface mounting backbox
- Used with intercom entry lobby panels, and remote intercom stations to surface mounted on the finish of a wall
- Opening in the rear of each box for wire access
- Finished on top, bottom and both sides
- Inside mounting holes
- Made of steel