Nutone 360 Automatic On/Off Inlets Installs with 361 or 361F Mounting Bracket Size: 3 3/4" W X 3" H X 5/8" D Installed Installs with CF361 or CF361F Mounting Bracket or 395, 396-1 or 396-3 Rough-in Kits Use with all NuTone Power Units.