Fan/fixture installation screws ship captiveBracket ends adjust for flush installation on ceilings up to 1-1/4 in THKAt 24 in on center 70 lb fan, 90 lb fixture, at 16 in on center 70 lb fan, 150 lb fixture2 hr fire rating
Arlington FBR423 Economical Fan/Fixture Support Box With Adjustable Steel Bracket, Plastic/Steel, 23 cu-in Capacity, 2.548 in L