4" Square, Red Alarm Box, Welded, Metallic. Depth: 2-1/8". Side Knockouts: (8) 1/2" & (4) 1/2" & 3/4" TKO (eccentric) . Bottom Knockouts: (3) 1/2" & (2) 1/2" & 3/4" TKO. Cubic Inches: 30.3". UL Listed for Use in 2 Hour Fire Rated Walls.
- Color: Red
- Knockout Diameter: 1/2 in
- Knockout Diameter: 3/4 in
- Mounting: Screw On
- Material: Steel
- Color: Red
- Depth: 2 1/8 in
- Mounting: Nail On
- Color: Red
- Cubic Inches: 30.300 in³