First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup Butt Gauge & Marker 25 inch wide by 28

25 inch wide by 28

Round pocket door latch is easy-to-install

15/16-inch

2 Support Brackets

First Alert BRK 9120B 120V Smoke Alarm, 9V Battery Backup Butt Gauge & Marker 25 inch wide by 28Designed to help promote household safety, the First Alert Hardwired Smoke Alarm with Battery Backup can provide early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast flaming fires. Features Ionization Sensor Reliably Detects Flaming Fires: The First Alert Hardwired Smoke Alarm with Battery Backup comes equipped with an ionization sensor to provide the earliest possible warning of