16 cu. in. Non-Metallic Ceiling Fan/Fixture Saddle Mount Box allows you to safely install a fan or lighting fixture during new construction or remodel. Featuring a heavy-duty plastic, screw-mount electrical box, the ceiling fan box works with any model of ceiling fan. The pan is 1/2 in. deep with side storage on both sides for extra wire capacity. The box supports fans up to 70 lbs.. and lighting fixtures up to 150 lbs.. Ceiling fan/fixture attaches to wood joist, not to