Step down installation clips allow the fitting to be installed or removed from the floor aboveFire barrier expands during fire conditions to maintain the floor's fire ratingAdjustable lower fire barrier accommodates concrete floor thicknesses from 2-1/4 to 7 inOversized EMT conduit tubes for increased cable capacityAccepts all Hubbell® SystemOne covers and sub platesExcellent solution for retrofit and new constructionDelivers power, voice, data and multimediaUL listed for use in 1 to 4 hr fire rated floors at 100% rated fillUL installation spacing minimum 2 feet on center, not more than one per 65 sq-ft of floor area in each spanFlush connection type2-1/2 in over metal deck minimum thickness300 lb static load through 3 in Dia mandrel(1) 1 in top, (1) 3/4 in bottom, (2) 1/2 in, 1-3/4 in side knockout