First Alert 10-Year Battery Smoke Alarm and Battery-Operated Carbon Monoxide Alarm Value Pack Color:White Contains iron for deep greening

Contains iron for deep greening

1 rectangular & 1 round

As you remove snow

Solder the valve onto the pipe

First Alert 10-Year Battery Smoke Alarm and Battery-Operated Carbon Monoxide Alarm Value Pack Color:White Contains iron for deep greeningComplies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency. 10 year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm Slim profile design is half the depth of a standard detector End of life warning lets you know when it's time to replace the alarm Test silence button for efficient testing to ensure the detector is working